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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
Davfs2, lvm-user: Insecure tempfile handling
Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200411-22
(Davfs2, lvm-user: Insecure tempfile handling)
Florian Schilhabel from the Gentoo Linux Security Audit Team found
that Davfs2 insecurely created .pid files in /tmp. Furthermore, Trustix
Secure Linux found that the lvmcreate_initrd script, included in the
lvm-user Gentoo package, also creates temporary files in
world-writeable directories with predictable names.
A local attacker could create symbolic links in the temporary
files directory, pointing to a valid file somewhere on the filesystem.
When Davfs2 or lvmcreate_initrd is called, this would result in the
file being overwritten with the rights of the user running the
software, which could be the root user.
There is no known workaround at this time.
All Davfs2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-fs/davfs2-0.2.2-r1"
All lvm-user users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-fs/lvm-user-1.0.7-r2"
Network Security Threat Level: Medium
Networks Security ID:
Vulnerability Assessment Copyright: (C) 2005 Michel Arboi
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