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[ GLSA 200412-10 ] Vim, gVim: Vulnerable options in modelines
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GLSA
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Joined: 13 Jun 2003
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PostPosted: Wed Dec 15, 2004 4:47 pm    Post subject: [ GLSA 200412-10 ] Vim, gVim: Vulnerable options in modeline Reply with quote

Gentoo Linux Security Advisory

Title: Vim, gVim: Vulnerable options in modelines (GLSA 200412-10)
Severity: normal
Exploitable: local
Date: December 15, 2004
Bug(s): #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: app-editors/vim
Vulnerable: < 6.3-r2
Unaffected: >= 6.3-r2
Architectures: All supported architectures

Package: app-editors/gvim
Vulnerable: < 6.3-r2
Unaffected: >= 6.3-r2
Architectures: All 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:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-editors/vim-6.3-r2"
All gVim users should also upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-editors/gvim-6.3-r2"


References

CAN-2004-1138


Last edited by GLSA on Tue Jun 27, 2006 4:16 am; edited 3 times in total
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