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Red Hat Enterprise Linux Moderate: RHSA-2011:0507-01 APR Stack Threat

red hat
Calendar Grey May 11, 2011
Dist Redhat Esm H88
Critical vulnerability notice for openssl patch within Debian highlights breach limits. Immediate update advised!
Updated apr packages that fix one security issue are now available for Red Hat Enterprise Linux 4, 5, and 6

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 https://access.redhat.com/kb/docs/DOC-11259

Summary

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.

Topics%20covered

Topics Covered

security advisory Red Hat moderate severity update instructions apr security stack exhaustion

References

https://access.redhat.com/security/cve/CVE-2011-0419 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux AS version 4:
Source:
i386: apr-0.9.4-25.el4.i386.rpm apr-debuginfo-0.9.4-25.el4.i386.rpm apr-devel-0.9.4-25.el4.i386.rpm
ia64: apr-0.9.4-25.el4.i386.rpm apr-0.9.4-25.el4.ia64.rpm apr-debuginfo-0.9.4-25.el4.i386.rpm apr-debuginfo-0.9.4-25.el4.ia64.rpm apr-devel-0.9.4-25.el4.ia64.rpm
ppc: apr-0.9.4-25.el4.ppc.rpm apr-0.9.4-25.el4.ppc64.rpm apr-debuginfo-0.9.4-25.el4.ppc.rpm apr-debuginfo-0.9.4-25.el4.ppc64.rpm apr-devel-0.9.4-25.el4.ppc.rpm
s390: apr-0.9.4-25.el4.s390.rpm apr-debuginfo-0.9.4-25.el4.s390.rpm apr-devel-0.9.4-25.el4.s390.rpm
s390x: apr-0.9.4-25.el4.s390.rpm apr-0.9.4-25.el4.s390x.rpm apr-debuginfo-0.9.4-25.el4.s390.rpm apr-debuginfo-0.9.4-25.el4.s390x.rpm apr-devel-0.9.4-25.el4.s390x.rpm
x86_64: apr-0.9.4-25.el4.i386.rpm apr-0.9.4-25.el4.x86_64.rpm apr-debuginfo-0.9.4-25.el4.i386.rpm apr-debuginfo-0.9.4-25.el4.x86_64.rpm apr-devel-0.9.4-25.el4.x86_64.rpm
Red Hat Enterprise Linux Desktop version 4:
Source:
i386: apr-0.9.4-25.el4.i386.rpm apr-debuginfo-0.9.4-25.el4.i386.rpm apr-devel-0.9.4-25.el4.i386.rpm
x86_64: apr-0.9.4-25.el4.i386.rpm apr-0.9.4-25.el4.x86_64.rpm apr-debuginfo-0.9.4-25.el4.i386.rpm apr-debuginfo-0.9.4-25.el4.x86_64.rpm apr-devel-0.9.4-25.el4.x86_64.rpm
Red Hat Enterprise Linux ES version 4:
Source:
i386:

Read the Full Advisory


Advisory ID: RHSA-2011:0507-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2011:0507.html
Issue date: 2011-05-11

Topic

Updated apr packages that fix one security issue are now available forRed Hat Enterprise Linux 4, 5, and 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory Red Hat moderate severity update instructions apr security stack exhaustion

Relevant Releases Architectures

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop version 4 - i386, x86_64

Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Bugs Fixed

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

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