Vulnerability Assessment & Network Security Forums

If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.

Home >> Browse Vulnerability Assessment Database >> Windows >> avast! Antivirus Server Edition LHA Archive Handling Buffer Overflow Vulnerability

Vulnerability Assessment Details

avast! Antivirus Server Edition LHA Archive Handling Buffer Overflow Vulnerability

Vulnerability Assessment Summary
Checks version of avast Server Edition

Detailed Explanation for this Vulnerability Assessment

Summary :

The remote Windows host contains an application that is affected by a
buffer overflow.

Description :

The remote host is running avast! Antivirus Server Edition.

The installed version of avast! Antivirus Server Edition is reportedly
prone to a heap overflow when processing LHA archives with long
filename and directory-name extended-header fields. A possible hacker may
be able to exploit this issue to execute arbitrary code on the remote
host, likely with LOCAL SYSTEM rights.

See also :

http://www.hustlelabs.com/advisories/04072006_alwil.pdf
http://www.avast.com/eng/avast-4-server-revision-history.html

Solution :

Upgrade to avast! Antivirus Server Edition 4.7.660 or later.

Network Security Threat Level:

High / CVSS Base Score : 7.0
(AV:R/AC:L/Au:NR/C:P/I:P/A:P/B:N)

Networks Security ID: 19903

Vulnerability Assessment Copyright: This script is Copyright (C) 2007 Tenable Network Security

Cables, Connectors