81 lines
2.8 KiB
XML
81 lines
2.8 KiB
XML
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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="200411-22">
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<title>Davfs2, lvm-user: Insecure tempfile handling</title>
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<synopsis>
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Davfs2 and the lvmcreate_initrd script (included in the lvm-user package)
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are both vulnerable to symlink attacks, potentially allowing a local user
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to overwrite arbitrary files with the rights of the user running them.
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</synopsis>
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<product type="ebuild">davfs2</product>
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<announced>November 11, 2004</announced>
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<revised>November 11, 2004: 01</revised>
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<bug>68406</bug>
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<bug>69149</bug>
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<access>local</access>
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<affected>
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<package name="net-fs/davfs2" auto="yes" arch="*">
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<unaffected range="ge">0.2.2-r1</unaffected>
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<vulnerable range="lt">0.2.2-r1</vulnerable>
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</package>
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<package name="sys-fs/lvm-user" auto="yes" arch="*">
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<unaffected range="ge">1.0.7-r2</unaffected>
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<vulnerable range="lt">1.0.7-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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Davfs2 is a file system driver that allows you to mount a WebDAV
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server as a local disk drive. lvm-user is a package providing userland
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utilities for LVM (Logical Volume Management) 1.x features.
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</p>
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</background>
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<description>
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<p>
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Florian Schilhabel from the Gentoo Linux Security Audit Team found
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that Davfs2 insecurely created .pid files in /tmp. Furthermore, Trustix
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Secure Linux found that the lvmcreate_initrd script, included in the
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lvm-user Gentoo package, also creates temporary files in
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world-writeable directories with predictable names.
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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 temporary
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files directory, pointing to a valid file somewhere on the filesystem.
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When Davfs2 or lvmcreate_initrd is called, this would result in the
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file being overwritten with the rights of the user running the
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software, which could be the root user.
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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 Davfs2 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 ">=net-fs/davfs2-0.2.2-r1"</code>
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<p>
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All lvm-user 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 ">=sys-fs/lvm-user-1.0.7-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=CAN-2004-0972">CAN-2004-0972</uri>
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</references>
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<metadata tag="submitter" timestamp="Wed, 10 Nov 2004 09:15:59 +0000">
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koon
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</metadata>
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<metadata tag="bugReady" timestamp="Thu, 11 Nov 2004 20:29:52 +0000">
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jaervosz
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</metadata>
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</glsa>
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