Issued:

2011-05-11

Updated:

2011-05-11

RHSA-2011:0507 - Moderate: apr security update

Synopsis

Moderate: apr security update

Type/Severity

Security Advisory Moderate

Topic

Updated apr packages that fix one security issue are now available for Red Hat Enterprise Linux 4, 5, and 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Description

The Apache Portable Runtime (APR) is a portability library used by the Apache HTTP Server and other projects. It provides a free library of C data structures and routines.

It was discovered that the apr_fnmatch() function used an unconstrained recursion when processing patterns with the '*' wildcard. An attacker could use this flaw to cause an application using this function, which also accepted untrusted input as a pattern for matching (such as an httpd server using the mod_autoindex module), to exhaust all stack memory or use an excessive amount of CPU time when performing matching. (CVE-2011-0419)

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

All apr users should upgrade to these updated packages, which contain a backported patch to correct this issue. Applications using the apr library, such as httpd, must be restarted for this update to take effect.

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at This content is not included.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

Updated Packages

• apr-0.9.4-25.el4.s390.rpm
• apr-devel-1.3.9-3.el6_0.1.i686.rpm
• apr-1.3.9-3.el6_0.1.i686.rpm
• apr-devel-1.3.9-3.el6_0.1.ppc.rpm
• apr-devel-0.9.4-25.el4.i386.rpm
• apr-docs-1.2.7-11.el5_6.4.s390x.rpm
• apr-debuginfo-1.3.9-3.el6_0.1.s390x.rpm
• apr-1.3.9-3.el6_0.1.s390x.rpm
• apr-devel-1.3.9-3.el6_0.1.s390x.rpm
• apr-0.9.4-25.el4.ia64.rpm
• apr-docs-1.2.7-11.el5_6.4.ia64.rpm
• apr-debuginfo-1.3.9-3.el6_0.1.x86_64.rpm
• apr-1.2.7-11.el5_6.4.x86_64.rpm
• apr-0.9.4-25.el4.src.rpm
• apr-debuginfo-1.3.9-3.el6_0.1.ppc.rpm
• apr-debuginfo-1.3.9-3.el6_0.1.ppc64.rpm
• apr-1.2.7-11.el5_6.4.ppc64.rpm
• apr-devel-1.2.7-11.el5_6.4.i386.rpm
• apr-1.2.7-11.el5_6.4.src.rpm
• apr-devel-1.2.7-11.el5_6.4.s390x.rpm
• apr-debuginfo-1.3.9-3.el6_0.1.i686.rpm
• apr-devel-1.3.9-3.el6_0.1.x86_64.rpm
• apr-0.9.4-25.el4.s390x.rpm
• apr-0.9.4-25.el4.x86_64.rpm
• apr-0.9.4-25.el4.ppc.rpm
• apr-1.3.9-3.el6_0.1.ppc.rpm
• apr-1.2.7-11.el5_6.4.i386.rpm
• apr-1.2.7-11.el5_6.4.ppc.rpm
• apr-docs-1.2.7-11.el5_6.4.ppc.rpm
• apr-1.3.9-3.el6_0.1.src.rpm
• apr-devel-1.2.7-11.el5_6.4.ppc.rpm
• apr-1.2.7-11.el5_6.4.ia64.rpm
• apr-devel-1.3.9-3.el6_0.1.ppc64.rpm
• apr-devel-1.3.9-3.el6_0.1.s390.rpm
• apr-docs-1.2.7-11.el5_6.4.i386.rpm
• apr-devel-1.2.7-11.el5_6.4.s390.rpm
• apr-1.3.9-3.el6_0.1.ppc64.rpm
• apr-devel-1.2.7-11.el5_6.4.ia64.rpm
• apr-devel-0.9.4-25.el4.ia64.rpm
• apr-1.2.7-11.el5_6.4.s390x.rpm
• apr-docs-1.2.7-11.el5_6.4.x86_64.rpm
• apr-debuginfo-1.3.9-3.el6_0.1.s390.rpm
• apr-1.3.9-3.el6_0.1.s390.rpm
• apr-devel-0.9.4-25.el4.s390x.rpm
• apr-0.9.4-25.el4.ppc64.rpm
• apr-devel-0.9.4-25.el4.ppc.rpm
• apr-1.3.9-3.el6_0.1.x86_64.rpm
• apr-devel-1.2.7-11.el5_6.4.ppc64.rpm
• apr-1.2.7-11.el5_6.4.s390.rpm
• apr-0.9.4-25.el4.i386.rpm
• apr-devel-0.9.4-25.el4.x86_64.rpm
• apr-devel-1.2.7-11.el5_6.4.x86_64.rpm
• apr-devel-0.9.4-25.el4.s390.rpm

Fixes

• This content is not included.BZ - 703390

CVEs

• CVE-2011-0419

References

• https://access.redhat.com/security/updates/classification/#moderate

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.