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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2004.0794 -- GLSA 200412-10 Vim and gVim vulnerable options in modelines 20 December 2004 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Vim 6.3 and prior gVim 6.3 and prior Publisher: Gentoo Linux Operating System: Linux variants UNIX variants Windows Mac OS X Impact: Execute Arbitrary Code/Commands Increased Privileges Access: Existing Account CVE Names: CAN-2004-1138 Comment: On vulnerable systems, AusCERT recommends adding the option "set nomodeline" to the global vimrc file until updated Vim packages become available. - --------------------------BEGIN INCLUDED TEXT-------------------- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200412-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Vim, gVim: Vulnerable options in modelines Date: December 15, 2004 Bugs: #73715 ID: 200412-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Several vulnerabilities related to the use of options in modelines have been found and fixed in Vim. They could potentially result in a local user escalating privileges. Background ========== Vim is an efficient, highly configurable improved version of the classic 'vi' text editor. gVim is the GUI version of Vim. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-editors/vim < 6.3-r2 >= 6.3-r2 2 app-editors/gvim < 6.3-r2 >= 6.3-r2 ------------------------------------------------------------------- 2 affected packages on all of their supported architectures. ------------------------------------------------------------------- Description =========== Gentoo's Vim maintainer, Ciaran McCreesh, found several vulnerabilities related to the use of options in Vim modelines. Options like 'termcap', 'printdevice', 'titleold', 'filetype', 'syntax', 'backupext', 'keymap', 'patchmode' or 'langmenu' could be abused. Impact ====== A local attacker could write a malicious file in a world readable location which, when opened in a modeline-enabled Vim, could trigger arbitrary commands with the rights of the user opening the file, resulting in privilege escalation. Please note that modelines are disabled by default in the /etc/vimrc file provided in Gentoo. Workaround ========== There is no known workaround at this time. Resolution ========== All Vim users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-editors/vim-6.3-r2" All gVim users should also upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-editors/gvim-6.3-r2" References ========== [ 1 ] CAN-2004-1138 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1138 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200412-10.xml 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 security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2004 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. http://creativecommons.org/licenses/by-sa/2.0 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBQcYwCCh9+71yA2DNAQJw1AQAhJq3J39rpyaewUS6fU3dld0qFReKGPQH af7Ir2gOYQnOBGI9ANFd4bJitXgxAezD9dqlns+3oww1azK3DI1LdUtGki8AD/UA vtSmWcClEb0hKPHhNhJXdRPkiCYb34npJxJ1XbtDAXRKXHaBqtDH/OswXdXoPUep R7EpU6JSNKA= =oGbs -----END PGP SIGNATURE-----