- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200501-07 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: xine-lib: Multiple overflows Date: January 06, 2005 Bugs: #74475 ID: 200501-07 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== xine-lib contains multiple overflows potentially allowing execution of arbitrary code. Background ========== xine-lib is a multimedia library which can be utilized to create multimedia frontends. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 media-libs/xine-lib < 1_rc8-r1 >= 1_rc8-r1 *>= 1_rc6-r1 Description =========== Ariel Berkman discovered that xine-lib reads specific input data into an array without checking the input size in demux_aiff.c, making it vulnerable to a buffer overflow (CAN-2004-1300) . iDefense discovered that the PNA_TAG handling code in pnm_get_chunk() does not check if the input size is larger than the buffer size (CAN-2004-1187). iDefense also discovered that in this same function, a negative value could be given to an unsigned variable that specifies the read length of input data (CAN-2004-1188). Impact ====== A remote attacker could craft a malicious movie or convince a targeted user to connect to a malicious PNM server, which could result in the execution of arbitrary code with the rights of the user running any xine-lib frontend. Workaround ========== There is no known workaround at this time. Resolution ========== All xine-lib users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose media-libs/xine-lib References ========== [ 1 ] CAN-2004-1187 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1187 [ 2 ] CAN-2004-1188 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1188 [ 3 ] CAN-2004-1300 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1300 [ 4 ] iDefense Advisory http://www.idefense.com/application/poi/display?id=176&type=vulnerabilities [ 5 ] iDefense Advisory http://www.idefense.com/application/poi/display?id=177&type=vulnerabilities [ 6 ] Ariel Berkman Advisory http://tigger.uic.edu/~jlongs2/holes/xine-lib.txt Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200501-07.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@xxxxxxxxxx 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
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