CVE-2011-0419

Apache Portable Runtime < 1.4.3 - Denial of Service via fnmatch *? Sequence Handling

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2011-0419. PoCs published by Maksymilian Arciemowicz.

AI-analyzed exploit summary This exploit targets a denial-of-service vulnerability in Apache APR versions prior to 1.4.4 by sending a crafted HTTP request with a long query string to a directory with mod_autoindex enabled. The PoC creates a long filename and a malicious .htaccess file to trigger excessive CPU usage.

Description

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.

Exploits (1)

exploitdb WORKING POC VERIFIED

by Maksymilian Arciemowicz · phpdoslinux

https://www.exploit-db.com/exploits/35738

View Code ZIP pw:eip

This exploit targets a denial-of-service vulnerability in Apache APR versions prior to 1.4.4 by sending a crafted HTTP request with a long query string to a directory with mod_autoindex enabled. The PoC creates a long filename and a malicious .htaccess file to trigger excessive CPU usage.

Classification

Working Poc 95%

Attack Type

Dos

Complexity

Trivial

Reliability

Reliable

Target: Apache APR < 1.4.4

No auth needed

Prerequisites: Directory with mod_autoindex enabled · Ability to create files in the target directory

MITRE ATT&CK

T1499 - Endpoint Denial of Service

devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (58)

Core 58

Core References

Not Applicable, Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/44574

Issue Tracking, Mailing List, Third Party Advisory vendor-advisory x_refsource_hp

http://marc.info/?l=bugtraq&m=131731002122529&w=2

Issue Tracking, Mailing List, Third Party Advisory vendor-advisory x_refsource_hp

http://marc.info/?l=bugtraq&m=134987041210674&w=2

Mailing List, Third Party Advisory mailing-list x_refsource_mlist

http://www.mail-archive.com/dev%40apr.apache.org/msg23976.html

Not Applicable third-party-advisory x_refsource_secunia

http://secunia.com/advisories/48308

Exploit, Third Party Advisory third-party-advisory x_refsource_sreasonres

http://securityreason.com/achievement_securityalert/98

Issue Tracking, Mailing List, Third Party Advisory vendor-advisory x_refsource_hp

http://marc.info/?l=bugtraq&m=131551295528105&w=2

Issue Tracking, Mailing List, Third Party Advisory vendor-advisory x_refsource_hp

http://marc.info/?l=bugtraq&m=132033751509019&w=2

Third Party Advisory vdb-entry signature x_refsource_oval

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14804

Third Party Advisory x_refsource_confirm

http://www.oracle.com/technetwork/topics/security/cpujuly2013-1899826.html

Third Party Advisory x_refsource_confirm

http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/gen/fnmatch.c#rev1.22

Third Party Advisory x_refsource_misc

http://cxib.net/stuff/apr_fnmatch.txts

Third Party Advisory vdb-entry signature x_refsource_oval

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14638

Broken Link, Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://securitytracker.com/id?1025527

Patch, Vendor Advisory x_refsource_confirm

http://svn.apache.org/viewvc?view=revision&revision=1098188

Broken Link x_refsource_confirm

http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/gen/fnmatch.c#rev1.15

Broken Link x_refsource_confirm

http://www.apache.org/dist/apr/CHANGES-APR-1.4

Patch, Vendor Advisory x_refsource_confirm

http://www.apache.org/dist/apr/Announcement1.x.html

Patch, Vendor Advisory x_refsource_confirm

http://svn.apache.org/viewvc?view=revision&revision=1098799

Broken Link vendor-advisory x_refsource_apple

http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html

Vendor Advisory x_refsource_confirm

http://httpd.apache.org/security/vulnerabilities_22.html

Patch, Vendor Advisory x_refsource_confirm

http://svn.apache.org/viewvc/apr/apr/branches/1.4.x/strings/apr_fnmatch.c?r1=731029&r2=1098902

Exploit, Third Party Advisory third-party-advisory x_refsource_sreason

http://securityreason.com/securityalert/8246

Third Party Advisory vendor-advisory x_refsource_debian

http://www.debian.org/security/2011/dsa-2237

Third Party Advisory vendor-advisory x_refsource_redhat

http://www.redhat.com/support/errata/RHSA-2011-0897.html

Issue Tracking, Patch, Third Party Advisory x_refsource_confirm

https://bugzilla.redhat.com/show_bug.cgi?id=703390

Not Applicable, Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/44564

Patch, Vendor Advisory x_refsource_confirm

http://www.apache.org/dist/httpd/Announcement2.2.html

Third Party Advisory x_refsource_confirm

http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html

Not Applicable, Vendor Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/44490

Patch, Third Party Advisory x_refsource_misc

http://cxib.net/stuff/apache.fnmatch.phps

Third Party Advisory vendor-advisory x_refsource_redhat

http://www.redhat.com/support/errata/RHSA-2011-0896.html

Third Party Advisory x_refsource_confirm

http://support.apple.com/kb/HT5002

Broken Link vendor-advisory x_refsource_mandriva

http://www.mandriva.com/security/advisories?name=MDVSA-2011:084

Mailing List, Third Party Advisory mailing-list x_refsource_mlist

http://www.mail-archive.com/dev%40apr.apache.org/msg23961.html

Broken Link vendor-advisory x_refsource_mandriva

http://www.mandriva.com/security/advisories?name=MDVSA-2013:150

Third Party Advisory vendor-advisory x_refsource_redhat

http://www.redhat.com/support/errata/RHSA-2011-0507.html

Mailing List, Third Party Advisory vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2011-11/msg00011.html

Mailing List, Third Party Advisory mailing-list x_refsource_mlist

http://www.mail-archive.com/dev%40apr.apache.org/msg23960.html