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Gentoo: GLSA-201709-07 Normal: Kpathsea User-Assisted Code Execution

A vulnerability in Kpathsea allows remote attackers to execute arbitrary commands by manipulating the -tex option from mpost program.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201709-07 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Kpathsea: User-assisted execution of arbitrary code Date: September 17, 2017 Bugs: #612328 ID: 201709-07 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= A vulnerability in Kpathsea allows remote attackers to execute arbitrary commands by manipulating the -tex option from mpost program. Background ========= Kpathsea is a library to do path searching. It is used by TeX Live and others TeX related software. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/kpathsea < 6.2.2_p20160523 > = 6.2.2_p20160523 Description ========== It was discovered that the mpost program from the shell_escape_commands list is capable of executing arbitrary external programs during the conversion of .tex files. The responsible function is runpopen() (texmfmp.c). Impact ===== A remote attacker, by enticing a user to open a specially crafted .tex file, could possibly execute arbitrary code with the privileges of the process. Workaround ========= There is no known workaround at this time. Resolution ========= All Kpathsea users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot -v "> =dev-libs/kpathsea-6.2.2_p20160523" Packages which depend on this library may need to be recompiled. Tools such asrevdep-rebuild may assist in identifying some of these packages. References ========= [ 1 ] CVE-2016-10243 https://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-10243 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201709-07 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 2017 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/ . Unauthorized code execution vulnerability via Kpathsea on Gentoo Linux. Refer to the advisory for mitigation instructions.. Gentoo Security Advisory,Kpathsea Execution Advisory,Remote Code Execution. . LinuxSecurity.com Team

Sep 17, 2017 Gentoo