GLSA-200411-22 : Davfs2, lvm-user: Insecure tempfile handling

This script is Copyright (C) 2004-2014 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

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.

Impact :

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.

Workaround :

There is no known workaround at this time.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200411-22.xml

Solution :

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'

Risk factor :

Low / CVSS Base Score : 2.1
(CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:N)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 15723 (gentoo_GLSA-200411-22.nasl)

Bugtraq ID:

CVE ID: CVE-2004-0972