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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="201701-29">
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<title>Vim, gVim: Remote execution of arbitrary code</title>
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<synopsis>A vulnerability has been found in Vim and gVim concerning how
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certain modeline options are treated.
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</synopsis>
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<product type="ebuild">vim, gvim</product>
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<announced>2017-01-11</announced>
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<revised count="1">2017-01-11</revised>
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<bug>600650</bug>
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<access>remote</access>
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<affected>
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<package name="app-editors/vim" auto="yes" arch="*">
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<unaffected range="ge">8.0.0106</unaffected>
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<vulnerable range="lt">8.0.0106</vulnerable>
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</package>
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<package name="app-editors/gvim" auto="yes" arch="*">
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<unaffected range="ge">8.0.0106</unaffected>
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<vulnerable range="lt">8.0.0106</vulnerable>
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</package>
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</affected>
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<background>
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<p>Vim is an efficient, highly configurable improved version of the classic
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‘vi’ text editor. gVim is the GUI version of Vim.
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</p>
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</background>
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<description>
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<p>Vim and gVim do not properly validate values for the ‘filetype’,
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‘syntax’, and ‘keymap’ options.
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</p>
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</description>
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<impact type="normal">
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<p>A remote attacker could entice a user to open a specially crafted file
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using Vim/gVim with certain modeline options enabled possibly resulting
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in execution of arbitrary code with the privileges of the process.
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</p>
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</impact>
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<workaround>
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<p>Disabling modeline support in .vimrc by adding “set nomodeline” will
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prevent exploitation of this flaw. By default, modeline is enabled for
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ordinary users but disabled for root.
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</p>
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</workaround>
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<resolution>
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<p>All Vim users should upgrade to the latest version:</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=app-editors/vim-8.0.0106"
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</code>
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<p>All gVim users should upgrade to the latest version:</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=app-editors/gvim-8.0.0106"
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</code>
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</resolution>
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<references>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-1248">CVE-2016-1248</uri>
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</references>
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<metadata tag="requester" timestamp="2017-01-09T17:07:43Z">whissi</metadata>
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<metadata tag="submitter" timestamp="2017-01-11T12:33:33Z">whissi</metadata>
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</glsa>
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