SuSE 11.1 Security Update : FUSE (SAT Patch Number 4095)

This script is Copyright (C) 2011-2013 Tenable Network Security, Inc.


Synopsis :

The remote SuSE 11 host is missing one or more security updates.

Description :

The following security issues were fixed :

- FUSE allowed local users to create mtab entries with
arbitrary pathnames, and consequently unmount any
filesystem, via a symlink attack on the parent directory
of the mountpoint of a FUSE filesystem. (CVE-2010-3879)

- Avoid mounting a directory including evaluation of
symlinks, which might have allowed local attackers to
mount filesystems anywhere in the system.
(CVE-2011-0541)

- Avoid symlink attacks on the mount point written in the
mtab file. Four bugs were fixed:. (CVE-2011-0543)

- fixed retrying nfs mounts on rpc timeouts

- allow seperate control of the internet protocol uses by
rpc.mount seperately of the protocol used by nfs.

- Fixed locking in libuuid/uuid to avoid duplicate uuids.

- mkswap bad block check marked every block bad in O(n!)
time on a good device New features were implemented :

- mount now has --fake and --no-canonicalize options,
required for the symlink security fixes. These were
backported from mainline.

- mount can now auto-detect and differentiate between
squashfs3 and squashfs (v4) filesystems, allowing
backward compatibility to the SUSE Linux Enterprise 11
GA codebase.

See also :

https://bugzilla.novell.com/show_bug.cgi?id=635393
https://bugzilla.novell.com/show_bug.cgi?id=651598
https://bugzilla.novell.com/show_bug.cgi?id=663385
https://bugzilla.novell.com/show_bug.cgi?id=666893
https://bugzilla.novell.com/show_bug.cgi?id=667215
https://bugzilla.novell.com/show_bug.cgi?id=668820
http://support.novell.com/security/cve/CVE-2010-3879.html
http://support.novell.com/security/cve/CVE-2011-0541.html
http://support.novell.com/security/cve/CVE-2011-0543.html

Solution :

Apply SAT patch number 4095.

Risk factor :

Medium / CVSS Base Score : 5.8
(CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P)

Family: SuSE Local Security Checks

Nessus Plugin ID: 53231 ()

Bugtraq ID:

CVE ID: CVE-2010-3879
CVE-2011-0541
CVE-2011-0543

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