Date: Fri, 11 Jun 2010 21:02:08 +0000 From: "Philip M. Gollucci" <pgollucci@ridecharge.com> To: apache@FreeBSD.org Subject: Fwd: [advisory] httpd Timeout detection flaw (mod_proxy_http) CVE-2010-2068 Message-ID: <4C12A450.2070802@ridecharge.com>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - -------- Original Message -------- Subject: [advisory] httpd Timeout detection flaw (mod_proxy_http) CVE-2010-2068 Date: Fri, 11 Jun 2010 12:48:55 -0700 From: William A. Rowe Jr. <wrowe@apache.org> To: announce@apache.org <announce@apache.org> Vulnerability; httpd Timeout detection flaw (mod_proxy_http) CVE-2010-2068 Classification; important Description; 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. Acknowledgements; We would like to thank Loren Anderson for the thorough research and reporting of this flaw. Mitigation; 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 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (FreeBSD) iD8DBQFMEqRQdbiP+9ubjBwRAjLpAJ9tHjp17J/pX9LdKWPBxlnZE9YNoACbBqY+ to/PPX5rKsYUzLAVScOiwZk= =8+N2 -----END PGP SIGNATURE-----
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