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Gentoo GLSA-200712-07: Moderate Risk From Lookup Symlink Attack

Lookup uses temporary files in an insecure manner, allowing for a symlink attack.. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200712-07 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Lookup: Insecure temporary file creation Date: December 09, 2007 Bugs: #197306 ID: 200712-07 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= Lookup uses temporary files in an insecure manner, allowing for a symlink attack. Background ========= Lookup is a search interface to books and dictionnaries for Emacs. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-emacs/lookup < 1.4.1 > = 1.4.1 Description ========== Tatsuya Kinoshita reported that the ndeb-binary function does not handle temporay files correctly. Impact ===== A local attacker could use a symlink attack to overwrite files with the privileges of the user running Lookup. Workaround ========= There is no known workaround at this time. Resolution ========= All Lookup users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =app-emacs/lookup-1.4.1" References ========= [ 1 ] CVE-2007-0237 https://www.cve.org/CVERecord?id=CVE-2007-0237 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200712-07 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 2007 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/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - iD8DBQFHXGFVuhJ+ozIKI5gRAgmrAJ9/X6JXfAXIox4/mjtd8Ua2iP53RACdHIcO mnpMB3GPlq7SfNtWAkqZPlQ=+46t -----END PGP SIGNATURE----- . Gentoo Alert: mitigate symlink vulnerability in Resolution through improved transient file management.. Lookup Security, Symlink Attack, Gentoo Advisory, File Creation, Software Integrity. . Severity: Important. LinuxSecurity.com Team

Dec 09, 2007 •Important Gentoo