Public Date:
703390: CVE-2011-0419 apr: unconstrained recursion in apr_fnmatch

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2011-0419 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

Base Score 4.3
Base Metrics AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 5 (apr) RHSA-2011:0507 2011-05-11
Red Hat JBoss Web Server 1.0 for RHEL 4 AS RHSA-2011:0897 2011-06-22
Red Hat Enterprise Linux 6 (apr) RHSA-2011:0507 2011-05-11
Red Hat Enterprise Linux 4 (apr) RHSA-2011:0507 2011-05-11
Red Hat JBoss Web Server 1.0 RHSA-2011:0896 2011-06-22
Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Server RHSA-2011:0897 2011-06-22
Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Server RHSA-2011:0897 2011-06-22


Red Hat would like to thank Maksymilian Arciemowicz for reporting this issue.


mod_autoindex can be configured to ignore request query arguments provided by the client by adding IgnoreClient option to the IndexOptions directive:

Last Modified

CVE description copyright © 2017, The MITRE Corporation