M E T A E Y E SG

[ advisories ]

•  Unrar for Linux Denial Of Service vulnerability.

Vendor: RARLABS (http://www.rarlabs.com)

Product: Unrar for linux (freeware).

Versions affected: All upto 3.70 beta 4

Severity: Moderate

Issue

The unrar for Linux results in crash due to processing of standard filters in RAR VM, while
processing a special crafted compressed RAR file. This happens only while extracting the
contents from the compressed file.

Impact

Any programs/softwares using the code from unrar for Linux from rarlabs for processing RAR files
are vulnerable.

PoC

http://www.metaeye.org/codes/corrupted.rar
The corrupted file has only one byte change from the original. At offset 0xE9, 80—>81.

References

1. Bugtraq BID 24866.

Status

Reported: 20/06/2007
Fixed in version 3.7 beta 5.



•  Clam AntiVirus RAR File Handling Denial Of Service Vulnerability.

Vendor: Clam AntiVirus (http://www.clamav.net)

Product: Clamav (libclamav)

Versions Affected: All before 0.91

Severity: Moderate

Issue

Clamav crashes due to processing of standard filters in RAR VM, while processing a
corrupted RAR file. Processing the corrupted file results in a null pointer deference.

Impact

Processing the corrupted file will result in crashing of clamscan application and
clamd daemon.

Fix

Upgrade to version 0.91.

PoC

http://www.metaeye.org/codes/corrupted.rar

Vendor Status

Reported: 25/06/2007
Fixed: 11/07/2007

References

1. Clamav bugzilla bug id 555.
2. Secunia advisory SA26038.
3. Bugtraq ID 24866.
4. CVE-2007-3725.



•  Redirection Vulnerability in wp-login.php

Vendor: Wordpress (http://www.wordpress.org).

Severity: Moderate.

Dated: 03 March 2007.

Versions Affected: All.

Issue

The wp-login.php page redirects a user to arbitrary page after
successful login by setting the redirect_to url parameter.

For example if a user logins successfully with his credentials
on the following page

http://www.foo.com/wp-login.php?redirect_to=http://www.google.co.in

He will be redirected to www.google.co.in.

Impact

This can lead to credentials stealing. Also cookie stealing
is possible coupled with some browser bugs.

Vendor Status

Reported on 03 March 2007.
Fixed.

References

1. CVE-2007-1599.



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