What’s Vulnerable › Vulnerabilities

CVE-2011-0419

• Severity: medium (CVSS 4.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 30.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2011-05-16 · updated 2026-06-16
• Weakness: CWE-770

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.

Affected products

• Apache HTTP Server: from 2.0.0 through 2.0.65; from 2.2.0 through 2.2.18
• Apache Software Foundation Apache Portable Runtime (APR): before 1.4.3 — fixed in 1.4.3
• macOS: 10.6.0
• Debian Linux: 5.0, 6.0, 7.0
• FreeBSD: all versions
• Android: all versions
• Netbsd: 5.1
• OpenBSD: 4.8
• Oracle Corporation Solaris Operating System: 10
• SUSE Linux Enterprise Server: 10-sp3

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Portable Runtime (APR) 1.4.3. Check the vendor advisory for mitigations.

References

• http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/gen/fnmatch.c#rev1.22
• http://cxib.net/stuff/apache.fnmatch.phps
• http://cxib.net/stuff/apr_fnmatch.txts
• http://httpd.apache.org/security/vulnerabilities_22.html
• http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
• http://lists.opensuse.org/opensuse-security-announce/2011-11/msg00011.html
• http://marc.info/?l=bugtraq&m=131551295528105&w=2
• http://marc.info/?l=bugtraq&m=131731002122529&w=2
• http://marc.info/?l=bugtraq&m=132033751509019&w=2
• http://marc.info/?l=bugtraq&m=134987041210674&w=2
• http://secunia.com/advisories/44490
• http://secunia.com/advisories/44564

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