| ||||||||||||||||
Gentoo alert 200409-21 (apache)
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200409-21 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Apache 2, mod_dav: Multiple vulnerabilities Date: September 16, 2004 Bugs: #62626, #63948, #64145 ID: 200409-21 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Several vulnerabilities have been found in Apache 2 and mod_dav for Apache 1.3 which could allow a remote attacker to cause a Denial of Service or a local user to get escalated privileges. Background ========== The Apache HTTP server is one of most popular web servers on the internet. mod_ssl provides SSL v2/v3 and TLS v1 support for it and mod_dav is the Apache module for Distributed Authoring and Versioning (DAV). Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-www/apache < 2.0.51 >= 2.0.51 < 2.0 2 net-www/mod_dav <= 1.0.3-r1 >= 1.0.3-r2 ------------------------------------------------------------------- 2 affected packages on all of their supported architectures. ------------------------------------------------------------------- Description =========== A potential infinite loop has been found in the input filter of mod_ssl (CAN-2004-0748) as well as a possible segmentation fault in the char_buffer_read function if reverse proxying to a SSL server is being used (CAN-2004-0751). Furthermore, mod_dav, as shipped in Apache httpd 2 or mod_dav 1.0.x for Apache 1.3, contains a NULL pointer dereference which can be triggered remotely (CAN-2004-0809). The third issue is an input validation error found in the IPv6 URI parsing routines within the apr-util library (CAN-2004-0786). Additionally a possible buffer overflow has been reported when expanding environment variables during the parsing of configuration files (CAN-2004-0747). Impact ====== A remote attacker could cause a Denial of Service either by aborting a SSL connection in a special way, resulting in CPU consumption, by exploiting the segmentation fault in mod_ssl or the mod_dav flaw. A remote attacker could also crash a httpd child process by sending a specially crafted URI. The last vulnerabilty could be used by a local user to gain the privileges of a httpd child, if the server parses a carefully prepared .htaccess file. Workaround ========== There is no known workaround at this time. Resolution ========== All Apache 2 users should upgrade to the latest version: # emerge sync # emerge -pv ">=net-www/apache-2.0.51" # emerge ">=net-www/apache-2.0.51" All mod_dav users should upgrade to the latest version: # emerge sync # emerge -pv ">=net-www/mod_dav-1.0.3-r2" # emerge ">=net-www/mod_dav-1.0.3-r2" References ========== [ 1 ] CAN-2004-0747 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0747 [ 2 ] CAN-2004-0748 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0748 [ 3 ] CAN-2004-0751 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0751 [ 4 ] CAN-2004-0786 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0786 [ 5 ] CAN-2004-0809 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0809 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200409-21.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2004 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/1.0 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFBSfyLvcL1obalX08RAgxBAJ4poCE8u69805Aog8dV9JfyXhOx/gCfcB+6 wmQyV3UBLPkFxVhtVkfQVjY= =zVd0 -----END PGP SIGNATURE----- (Log in to post comments)
|
||||||||||||||||