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avast! LHA Archive Processing Buffer Overflow Vulnerability
Secunia Advisory: SA21794
Release Date: 2006-09-08
Popularity: 13,028 views

Critical:
Highly critical
Impact: System access
Where: From remote
Solution Status: Vendor Patch

Software:avast! Home/Professional 4.x
avast! Server Edition 4.x

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
Ryan Smith has reported a vulnerability in avast!, which can be exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to a boundary error in the anti-virus engine when processing LHA archives. This can be exploited to cause a heap-based buffer overflow via a specially crafted LHA archive with overly long filename and directory name extended-header fields.

Successful exploitation allows execution of arbitrary code.

The vulnerability is reported in the anti-virus engine prior to versions 4.7.869 for desktops and 4.7.660 for servers.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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