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VULNERABILITIES - July 15, 2005

TITLE:
Sophos Anti-Virus ZIP Archive Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA16082

VERIFY ADVISORY:
http://secunia.com/advisories/16082/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
From remote

SOFTWARE:
Sophos MailMonitor 2.x
http://secunia.com/product/165/
Sophos Anti-Virus 5.x
http://secunia.com/product/5390/
Sophos Anti-Virus 4.x
http://secunia.com/product/5391/
Sophos Anti-Virus 3.x
http://secunia.com/product/164/
Sophos PureMessage 4.x
http://secunia.com/product/3876/

DESCRIPTION:
A vulnerability has been reported in Sophos Anti-Virus, which can be
exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to missing validation checks on the
"Extra field length" value when scanning a ZIP archive compressed
using the BZIP2 algorithm. This can be exploited to cause an infinite
loop that consumes large amount of CPU resources via a malicious ZIP
file with an extra field length value of "0xFFFF".

Successful exploitation prevents further scanning, but requires the
non-default "Scan inside archive files" setting to be enabled.

The vulnerability has been reported in versions 3.91, 3.90, and
5.0.1. Other versions may also be affected.

SOLUTION:
Update to latest versions using automatic update.

The problem has reportedly been fixed in the following versions:
* Version 3.95.0 of Sophos Anti-Virus (all platforms)
* Version 5.0.4 of Sophos Anti-Virus (Windows 2000/XP/2003)
* Version 4.5.3 of Sophos Anti-Virus (Windows NT and Windows
95/98/Me)
* Latest updated versions of PureMessage for UNIX, Windows/Exchange
and MailMonitor.

PROVIDED AND/OR DISCOVERED BY:
Discovered by anonymous person and reported via iDEFENSE.

ORIGINAL ADVISORY:
iDEFENSE:
http://www.idefense.com/application/poi/display?id=283&type=vulnerabilities

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Collapse -
Macromedia JRun Authentication Token Security Issue

In reply to: VULNERABILITIES - July 15, 2005

TITLE:
Macromedia JRun Authentication Token Security Issue

SECUNIA ADVISORY ID:
SA16081

VERIFY ADVISORY:
http://secunia.com/advisories/16081/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
From remote

SOFTWARE:
Macromedia Jrun 4.x
http://secunia.com/product/863/
Macromedia ColdFusion MX 7
http://secunia.com/product/4984/
Macromedia ColdFusion MX 6.x
http://secunia.com/product/864/

DESCRIPTION:
A security issue has been reported in JRun, which can result in
malicious users gaining access to another user's session.

The problem is caused due to a race condition where JRun in certain
situations during heavy load may generate the same authentication
token for two different sessions. This may allow a malicious
authenticated user to access another user's session.

The security issue affects the following versions:
* ColdFusion MX 7.0 Enterprise Multi-Server Edition
* ColdFusion MX 6.1 Enterprise with JRun
* JRun 4.0

SOLUTION:
Apply patch:
http://download.macromedia.com/pub/security/mpsb05-05.zip

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Greg Ball, University of Virginia.

ORIGINAL ADVISORY:
Macromedia:
http://www.macromedia.com/devnet/security/security_zone/mpsb05-05.html

Collapse -
Winamp ID3v2 Tag Handling Buffer Overflow Vulnerability

In reply to: VULNERABILITIES - July 15, 2005

TITLE:
Winamp ID3v2 Tag Handling Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA16077

VERIFY ADVISORY:
http://secunia.com/advisories/16077/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
From remote

SOFTWARE:
Winamp 5.x
http://secunia.com/product/3021/

DESCRIPTION:
Leon Juranic has reported a vulnerability in Winamp, which can be
exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error in the handling
of ID3v2 tags and can be exploited to cause a buffer overflow via
e.g. a MP3 file containing an overly long string in the "Artist"
field.

Successful exploitation allows execution of arbitrary code, but
requires some user interaction (e.g. that the user adds a malicious
MP3 file to a playlist and then plays the file).

The vulnerability has been reported in versions 5.03a, 5.09, and
5.091. Other versions may also be affected.

SOLUTION:
The vendor will reportedly issue a fixed version soon.

PROVIDED AND/OR DISCOVERED BY:
Leon Juranic, LSS Security Team.

ORIGINAL ADVISORY:
LSS:
http://security.lss.hr/en/index.php?page=details&ID=LSS-2005-07-14

Collapse -
BitDefender for Mail Servers Malware Detection Bypass

In reply to: VULNERABILITIES - July 15, 2005

TITLE:
BitDefender for Mail Servers Malware Detection Bypass

SECUNIA ADVISORY ID:
SA16085

VERIFY ADVISORY:
http://secunia.com/advisories/16085/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass

WHERE:
From remote

SOFTWARE:
BitDefender for Mail Servers
http://secunia.com/product/2110/

DESCRIPTION:
Alexander Hagenah has reported a vulnerability in BitDefender for
Mail Servers, which can be exploited by malware to bypass certain
scanning functionality.

The vulnerability is caused due to an error when parsing attachments
and can be exploited via a specially crafted UUencoded mail with
multiple attachments.

Successful exploitation causes malware in an attachment to pass the
scanning functionality undetected.

The vulnerability has been reported in engine versions 1.6.1 and
prior for Linux and FreeBSD.

SOLUTION:
The vendor has reportedly issued a patch, which is downloaded
automatically.

PROVIDED AND/OR DISCOVERED BY:
Alexander Hagenah

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