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Gentoo: GLSA-202310-05 Medium Severity: File Manipulation Vulnerability

An insecure temporary file usage has been reported in Screenie, allowing for symlink attacks.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200909-09 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Screenie: Insecure temporary file usage Date: September 09, 2009 Bugs: #250476 ID: 200909-09 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= An insecure temporary file usage has been reported in Screenie, allowing for symlink attacks. Background ========= Screenie is a small screen frontend that is designed to be a session handler. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-misc/screenie < 1.30.0-r1 > = 1.30.0-r1 Description ========== Dmitry E. Oboukhov reported that Screenie does not handle "/tmp/.screenie.#####" temporary files securely. Impact ===== A local attacker could perform symlink attacks to overwrite arbitrary files with the privileges of the user running the application. Workaround ========= There is no known workaround at this time. Resolution ========= All Screenie users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose =app-misc/screenie-1.30.0-r1 References ========= [ 1 ] CVE-2008-5371 https://www.cve.org/CVERecord?id=CVE-2008-5371 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200909-09 Concerns? ======== Security is a primary focus of Gentoo Linuxand 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/ . The Gentoo Linux security bulletin emphasizes a vulnerability related to file permissions within Screenie, which could facilitate symlink-based exploitation.. Symlink Attack, Screenie Exploit, Temporary File Security. . Severity: Medium. LinuxSecurity.com Team

Sep 09, 2009 •Medium Gentoo