The Apache team have released a security update to the popular webserver. This version of Apache is a security and bug fix release:

  • SECURITY: CVE-2011-3348 (cve.mitre.org) mod_proxy_ajp when combined with mod_proxy_balancer: Prevents unrecognized HTTP methods from marking ajp: balancer members in an error state, avoiding denial of service.
  • SECURITY: CVE-2011-3192 (cve.mitre.org) core: Further fixes to the handling of byte-range requests to use less memory, to avoid denial of service. This patch includes fixes to the patch introduced in release 2.2.20 for protocol compliance, as well as the MaxRanges directive.

I would strongly advise you to upgrade your server accordingly as this will solve the problem of the apache killer security issue by which someone could take over your server.

If you’ve forgotten how to upgrade your Apache installation in the least painfull way with a possibility to go back if something goes wrong: Upgrading Apache