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71 lines
2.3 KiB
71 lines
2.3 KiB
<?xml version="1.0" encoding="utf-8"?>
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<?xml-stylesheet href="/xsl/glsa.xsl" type="text/xsl"?>
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<?xml-stylesheet href="/xsl/guide.xsl" type="text/xsl"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="200711-32">
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<title>Feynmf: Insecure temporary file creation</title>
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<synopsis>
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A vulnerability has been discovered in Feynmf allowing local users to
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overwrite arbitrary files via a symlink attack.
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</synopsis>
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<product type="ebuild">feynmf</product>
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<announced>November 20, 2007</announced>
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<revised>November 20, 2007: 01</revised>
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<bug>198231</bug>
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<access>local</access>
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<affected>
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<package name="dev-tex/feynmf" auto="yes" arch="*">
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<unaffected range="ge">1.08-r2</unaffected>
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<vulnerable range="lt">1.08-r2</vulnerable>
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</package>
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</affected>
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<background>
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<p>
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Feynmf is a combined LaTeX and Metafont package for easy drawing of
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professional quality Feynman (and maybe other) diagrams.
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</p>
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</background>
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<description>
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<p>
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Kevin B. McCarty discovered that the feynmf.pl script creates a
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temporary "properly list" file at the location "$TMPDIR/feynmf$PID.pl",
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where $PID is the process ID.
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</p>
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</description>
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<impact type="normal">
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<p>
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A local attacker could create symbolic links in the directory where the
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temporary files are written, pointing to a valid file somewhere on the
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filesystem that is writable by the user running Feynmf. When Feynmf
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writes the temporary file, the target valid file would then be
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overwritten with the contents of the Feynmf temporary file.
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</p>
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</impact>
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<workaround>
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<p>
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There is no known workaround at this time.
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</p>
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</workaround>
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<resolution>
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<p>
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All Feynmf users should upgrade to the latest version:
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</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=dev-tex/feynmf-1.08-r2"</code>
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</resolution>
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<references>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5940">CVE-2007-5940</uri>
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</references>
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<metadata tag="requester" timestamp="Mon, 19 Nov 2007 21:43:28 +0000">
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p-y
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</metadata>
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<metadata tag="bugReady" timestamp="Mon, 19 Nov 2007 21:44:51 +0000">
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p-y
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</metadata>
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<metadata tag="submitter" timestamp="Tue, 20 Nov 2007 00:07:40 +0000">
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rbu
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</metadata>
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</glsa>
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