Multiple vulnerabilities has been discovered and corrected in apache:

The byterange filter in the Apache HTTP Server 1.3.x, 2.0.x through
2.0.64, and 2.2.x through 2.2.19 allows remote attackers to cause a
denial of service (memory and CPU consumption) via a Range header
that expresses multiple overlapping ranges, as exploited in the
wild in August 2011, a different vulnerability than CVE-2007-0086
(CVE-2011-3192).

Packages for 2009.0 are provided as of the Extended Maintenance
Program. Please visit this link to learn more:
http://store.mandriva.com/product_info.php?cPath=149&products_id=490

The updated packages have been patched to correct this issue.