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B. Package Updates
Important
The Red Hat Enterprise Linux 6 Technical Notes compilations for Red Hat Enterprise Linux 6.0, 6.1 and 6.2 have been republished.
Each compilation still lists all advisories comprising their respective GA release, including all Fastrack advisories.
To more accurately represent the advisories released between minor updates of Red Hat Enterprise Linux, however, some advisories released asynchronously between minor releases have been relocated.
Previously, these asynchronously released advisories were published in the Technical Notes for the most recent Red Hat Enterprise Linux minor upate. Asynchronous advisories released after the release of Red Enterprise Linux 6.1 and before the release of Red Hat Enterprise Linux 6.2 were published in the Red Hat Enterprise Linux 6.2 Technical Notes, for example.
Most of these asynchronous advisories were concerned with, or even specific to, the then extant Red Hat Enterprise Linux release, however.
With these republished Technical Notes, such advisories are now incorporated into the Technical Notes for the Red Hat Enterprise Linux release they are associated with.
Future Red Hat Enterprise Linux Technical Notes will follow this pattern. On first publication a Red Hat Enterprise Linux X.y Technical Notes compilation will include the advisories comprising that release along with the Fastrack advisories for the release.
Upon the GA of the succeeding Red Hat Enterprise Linux release, the Red Hat Enterprise Linux X.y Technical Notes compilation will be republished to include associated asynchronous advisories released since Red Hat Enterprise Linux X.y GA up until the GA of the successive release.
B.1. apr
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 for each vulnerability from the CVE link(s) associated with each description below.
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.
- CVE-2011-0419
- 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.
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.
