Vulnerability; httpd Timeout detection flaw (mod_proxy_http) CVE-2010-2068
A timeout detection flaw in the httpd mod_proxy_http module causes proxied response to be sent as the response to a different request, and potentially served to a different client, from the HTTP proxy pool worker pipeline. This may represent a confidential data revealing flaw. This affects only Netware, Windows or OS2 builds of httpd version 2.2.9 through 2.2.15, 2.3.4-alpha and 2.3.5-alpha, when the proxy worker pools have been enabled. Earlier 2.2, 2.0 and 1.3 releases were not affected.
We would like to thank Loren Anderson for the thorough research and reporting of this flaw.
Apply any one of the following mitigations to avert the possibility of confidential information disclosure. * Do not load mod_proxy_http. * Do not configure/enable any http proxy worker pools with ProxySet or ProxyPass optional arguments. * The straightforward workaround to disable mod_proxy_http's reuse of backend connection pipelines is to set the following global directive; SetEnv proxy-nokeepalive 1 * Replace mod_proxy_http.so with a patched version, for source code see http://www.apache.org/dist/httpd/patches/apply_to_2.2.15/ or http://www.apache.org/dist/httpd/patches/apply_to_2.3.5/ and for binaries see the http://www.apache.org/dist/httpd/binaries/ tree for win32 or netware, as appropriate. * Upgrade to Apache httpd 2.2.16 or higher, once released. There is no tentative release date scheduled.
Update Released; 11th June 2010