From koon@gentoo.org Tue Feb 15 17:27:45 2005 From: Thierry Carrez To: gentoo-announce@lists.gentoo.org Cc: security-alerts@linuxsecurity.com, bugtraq@securityfocus.com, full-disclosure@lists.netsys.com Date: Tue, 15 Feb 2005 22:42:45 +0100 Subject: [Full-Disclosure] [ GLSA 200502-21 ] lighttpd: Script source disclosure - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200502-21 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Low Title: lighttpd: Script source disclosure Date: February 15, 2005 Bugs: #81776 ID: 200502-21 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== An attacker can trick lighttpd into revealing the source of scripts that should be executed as CGI or FastCGI applications. Background ========== lighttpd is a small-footprint, fast, compliant and very flexible web-server which is optimized for high-performance environments. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 www-servers/lighttpd < 1.3.10-r1 >= 1.3.10-r1 Description =========== lighttpd uses file extensions to determine which elements are programs that should be executed and which are static pages that should be sent as-is. By appending %00 to the filename, you can evade the extension detection mechanism while still accessing the file. Impact ====== A remote attacker could send specific queries and access the source of scripts that should have been executed as CGI or FastCGI applications. Workaround ========== There is no known workaround at this time. Resolution ========== All lighttpd users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=www-servers/lighttpd-1.3.10-r1" References ========== [ 1 ] lighttpd-announce Advisory http://article.gmane.org/gmane.comp.web.lighttpd/1171 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200502-21.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 2005 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/2.0 [ Part 1.2, "OpenPGP digital signature" Application/PGP-SIGNATURE ] [ 264bytes. ] [ Unable to print this part. ] [ Part 2: "Attached Text" ] _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html