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Gentoo: 201310-17 Low Severity: Pmake Symlink Attack Advisory

pmake uses temporary files in an insecure manner, allowing for symlink attacks.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201310-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Low Title: pmake: Insecure temporary file usage Date: October 28, 2013 Bugs: #367891 ID: 201310-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= pmake uses temporary files in an insecure manner, allowing for symlink attacks. Background ========= pmake is Debian's version of NetBSD's make, a tool to build programs in parallel. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 sys-devel/pmake < 1.111.3.1 > = 1.111.3.1 Description ========== /usr/share/mk/bsd.lib.mk and /usr/share/mk/bsd.prog.mk create temporary files insecurely, with predictable names (/tmp/_depend[PID]), and without using $TMPDIR. Impact ===== The make include files allow local users to overwrite arbitrary files via a symlink attack. Workaround ========= There is no known workaround at this time. Resolution ========= All pmake users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =sys-devel/pmake-1.111.3.1" References ========= [ 1 ] CVE-2011-1920 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1920 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201310-17 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentialityand 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 2013 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/ . Gentoo Security Advisory GLSA 201400-15 raises an alert regarding a medium severity vulnerability associated with improper handling of file permissions during the installation process.. Gentoo Security, Pmake, Temporary Files, Symlink Attack. . Severity: Low. LinuxSecurity.com Team

Oct 28, 2013 •Low Gentoo