Anti-Trojan Buffer Overflow in 'unacev2.dll' in Processing ACE Archives Lets Remote Users Execute Arbitrary Code
|
|
SecurityTracker Alert ID: 1016065
|
|
SecurityTracker URL: http://securitytracker.com/id?1016065
|
|
CVE Reference: CVE-2005-2856
(Links to External Site)
|
Date: May 11 2006
|
Impact: Execution of arbitrary code via network, User access via network
|
Vendor Confirmed: Yes
|
Advisory: Secunia Research
|
Description: A vulnerability was reported in Emsi Software's Anti-Trojan. A remote user can execute arbitrary code on the target system.
A remote user can create an ACE archive containing a file with a specially crafted filename. When the archive is scanned, a buffer
overflow will occur in 'unacev2.dll' and arbitrary code will be executed on the target user's system. The code will run with the
privileges of the target user.
The "Search in archive files" option must be enabled for this vulnerability to be exploited.
The
vendor was notified on May 8, 2006.
Secunia Research discovered this vulnerability.
|
Impact: A remote user can cause arbitrary code to be executed on the target user's system.
|
Solution: No solution was available at the time of this entry.
The affected product version is no longer supported and the vendor recommends upgrading to the "a-squared Anti-Malware" product.
|
Vendor URL: www.emsisoft.com/ (Links to External Site)
|
Cause: Boundary error
|
Underlying OS: Windows (Any)
|
Reported By: Secunia Research <remove-vuln@secunia.com>
|
Message History:
None.
|
Source Message Contents
|
Date: Mon, 08 May 2006 15:43:56 +0200
From: Secunia Research <remove-vuln@secunia.com>
Subject: Secunia Research: Anti-Trojan unacev2.dll Buffer Overflow
|
======================================================================
Secunia Research 08/05/2006
- Anti-Trojan unacev2.dll Buffer Overflow Vulnerability -
======================================================================
Table of Contents
Affected Software....................................................1
Severity.............................................................2
Description of Vulnerability.........................................3
Solution.............................................................4
Time Table...........................................................5
Credits..............................................................6
References...........................................................7
About Secunia........................................................8
Verification.........................................................9
======================================================================
1) Affected Software
* Anti-Trojan 5.5.421.
Prior versions may also be affected.
======================================================================
2) Severity
Rating: Highly Critical
Impact: System Access
Where: Remote
======================================================================
3) Description of Vulnerability
Secunia Research has discovered a vulnerability in Anti-Trojan,
which can be exploited by malicious people to compromise a user's
system.
The vulnerability is caused due to a boundary error in UNACEV2.DLL
when extracting an ACE archive containing a file with an overly long
filename. This can be exploited to cause a stack-based buffer overflow
when a user scans a specially crafted ACE archive.
The vulnerability is related to:
SA16479
Successful exploitation requires that the "Search in archive files"
option is enabled.
======================================================================
4) Solution
Version 5.5 is no longer supported and no fix is available.
The vendor recommends existing users to upgrade to the successor
product "a-squared Anti-Malware".
======================================================================
5) Time Table
08/05/2006 - Initial vendor notification.
08/05/2006 - Initial vendor reply.
08/05/2006 - Public disclosure.
======================================================================
6) Credits
Discovered by Secunia Research.
======================================================================
7) References
SA16479:
http://secunia.com/advisories/16479/
The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2005-2856 for the vulnerability.
======================================================================
8) About Secunia
Secunia collects, validates, assesses, and writes advisories regarding
all the latest software vulnerabilities disclosed to the public. These
advisories are gathered in a publicly available database at the
Secunia website:
http://secunia.com/
Secunia offers services to our customers enabling them to receive all
relevant vulnerability information to their specific system
configuration.
Secunia offers a FREE mailing list called Secunia Security Advisories:
http://secunia.com/secunia_security_advisories/
======================================================================
9) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2006-27/advisory/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
======================================================================
|
|
