Nessus Plugin #15723

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

Family:

Gentoo Local Security Checks

Category:

infos

Copyright:

(C) 2004 Michel Arboi

Summary:

Davfs2, lvm-user: Insecure tempfile handling

Version:

$Revision: 1.1 $

Cve_id:

CAN-2004-0972

Bugtraq_id:

-

Xrefs:

GLSA:200411-22

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.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0972


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 : Medium