CVE-2011-0419: Apache HTTP Server

Medium severity, CVSS 4.3. EPSS: 30.4% chance of exploitation in the next 30 days.

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, up to and including 2.0.65; from 2.2.0, up to and including 2.2.18
• Apache Portable Runtime: before 1.4.3 (fixed in 1.4.3)
• Apple Mac OS X: version 10.6.0 only
• Debian Debian Linux: version 5.0 only; version 6.0 only; version 7.0 only
• Freebsd Freebsd: any version
• Google Android: any version
• Netbsd Netbsd: version 5.1 only
• OpenBSD OpenBSD: version 4.8 only
• Oracle Solaris: version 10 only
• Suse Linux Enterprise Server: version 10 only

Published 2011-05-16. Last modified 2026-06-16.