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Gentoo GLSA-200908-07 Normal: Compress::Raw Denial of Service Risk

An off-by-one error in Compress::Raw::Zlib and Compress::Raw::Bzip2 might lead to a Denial of Service.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200908-07 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Perl Compress::Raw modules: Denial of Service Date: August 18, 2009 Bugs: #273141, #281955 ID: 200908-07 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= An off-by-one error in Compress::Raw::Zlib and Compress::Raw::Bzip2 might lead to a Denial of Service. Background ========= Compress::Raw::Zlib and Compress::Raw::Bzip2 are Perl low-level interfaces to the zlib and bzip2 compression libraries. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 perl-core/Compress-Raw-Zlib < 2.020 > = 2.020 2 perl-core/Compress-Raw-Bzip2 < 2.020 > = 2.020 ------------------------------------------------------------------- 2 affected packages on all of their supported architectures. ------------------------------------------------------------------- Description ========== Leo Bergolth reported an off-by-one error in the inflate() function in Zlib.xs of Compress::Raw::Zlib, possibly leading to a heap-based buffer overflow (CVE-2009-1391). Paul Marquess discovered a similar vulnerability in the bzinflate() function in Bzip2.xs of Compress::Raw::Bzip2 (CVE-2009-1884). Impact ===== A remote attacker might entice a user or automated system (for instance running SpamAssassin or AMaViS) to process specially craftedfiles, possibly resulting in a Denial of Service condition. Workaround ========= There is no known workaround at this time. Resolution ========= All Compress::Raw::Zlib users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose =perl-core/Compress-Raw-Zlib-2.020 All Compress::Raw::Bzip2 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose =perl-core/Compress-Raw-Bzip2-2.020 References ========= [ 1 ] CVE-2009-1391 https://www.cve.org/CVERecord?id=CVE-2009-1391 [ 2 ] CVE-2009-1884 https://www.cve.org/CVERecord?id=CVE-2009-1884 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200908-07 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 This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org. License ====== Copyright 2009 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. https://creativecommons.org/licenses/by-sa/2.5/ . A significant Denial of Service flaw found in the Perl Compress::Raw libraries necessitates immediate patching for Gentoo users.. Denial of Service, Perl Modules, Gentoo Security, Compress Raw. . LinuxSecurity.com Team

Aug 18, 2009 Gentoo