Ubuntu Security Notice 1259-1 - It was discovered that the mod_proxy module in Apache did not properly interact with the RewriteRule and ProxyPassMatch pattern matches in the configuration of a reverse proxy. This could allow remote attackers to contact internal webservers behind the proxy that were not intended for external exposure. Stefano Nichele discovered that the mod_proxy_ajp module in Apache when used with mod_proxy_balancer in certain configurations could allow remote attackers to cause a denial of service via a malformed HTTP request. Various other issues were also addressed.
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Mandriva Linux Security Advisory 2011-057 - The configuration merger in itk.c in the Steinar H. Gunderson mpm-itk Multi-Processing Module for the Apache HTTP Server does not properly handle certain configuration sections that specify NiceValue but not AssignUserID, which might allow remote attackers to gain privileges by leveraging the root uid and root gid of an mpm-itk process.
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Debian Linux Security Advisory 2202-1 - MPM_ITK is an alternative Multi-Processing Module for Apache HTTPD that is included in Debian's apache2 package.
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