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Gentoo: GLSA-200812-08 Normal: Mgetty Symlink Attack Exploit

Mgetty uses temporary files in an insecure manner, allowing for symlink attacks.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200812-08 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Mgetty: Insecure temporary file usage Date: December 06, 2008 Bugs: #235806 ID: 200812-08 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= Mgetty uses temporary files in an insecure manner, allowing for symlink attacks. Background ========= Mgetty is a set of fax and voice modem programs. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-dialup/mgetty < 1.1.36-r2 > = 1.1.36-r2 Description ========== Dmitry E. Oboukhov reported that the "spooldir" directory in fax/faxspool.in is created in an insecure manner. Impact ===== A local attacker could exploit this vulnerability to overwrite arbitrary files with the privileges of the user running the application. Workaround ========= There is no known workaround at this time. Resolution ========= All Mgetty users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =net-dialup/mgetty-1.1.36-r2" References ========= [ 1 ] CVE-2008-4936 https://www.cve.org/CVERecord?id=CVE-2008-4936 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200812-08 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuringthe 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 2008 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 vulnerability in the Gentoo Mgetty package related to insecure temporary file handling can lead to symlink attacks, posing serious security risks that require immediate updates. Mgetty Security Advisory, File Exploit, Gentoo Linux, Symlink Attack, Temporary File. . LinuxSecurity.com Team

Dec 06, 2008 Gentoo