Sergio Alvarez has reported some vulnerabilities in AVG Anti-Virus, which can be exploited by malicious people to cause a DoS (Denial of Service) or potentially compromise a vulnerable system.

1) An integer overflow error when parsing CAB archives can be exploited to cause a heap-based buffer overflow via a specially crafted CAB archive.

2) An unspecified error when parsing RAR archives can be exploited to cause a heap-based buffer overflow via a specially crafted RAR archive.

3) An uninitialized variable error exists within the parsing of CAB archives.

4) A division by zero error when parsing DOC files may in certain cases cause a DoS via a specially crafted DOC file.

5) An unspecified error exists within the parsing of EXE files.

The vulnerabilities are reported in AVG Antivirus software versions prior to 7.1.407.

Solution
Update to the latest version.

Provided and/or discovered by
Sergio Alvarez, n.runs.

Changelog
Further details available to Secunia VIM customers

Original Advisory
Grisoft:
http://www.grisoft.com/doc/36365/lng/us/tpl/tpl01

Deep Links
Links available to Secunia VIM customers