Secunia Security Advisory - fRoGGz has discovered a weakness in AVG Anti-Virus scan engine, which can be exploited by malware to bypass certain scanning functionality.
0419160ad95798c8d6abf50ca45eb3b85a142aa934135c82719a4c67101e13a7
TITLE:
AVG Anti-Virus Engine Malformed ARJ Archive Virus Detection Bypass
SECUNIA ADVISORY ID:
SA17186
VERIFY ADVISORY:
http://secunia.com/advisories/17186/
CRITICAL:
Not critical
IMPACT:
Security Bypass
WHERE:
>From remote
SOFTWARE:
AVG Antivirus Server
http://secunia.com/product/337/
DESCRIPTION:
fRoGGz has discovered a weakness in AVG Anti-Virus scan engine, which
can be exploited by malware to bypass certain scanning functionality.
For more information:
SA17126
The weakness has been confirmed in AVG Email Server Edition version
7.0.344 (267.11.14/131) when scanning an email containing a malformed
".arj" archive with a NULL character prepended to the header. Other
versions may also be affected.
NOTE: This is not an issue on client systems, as the malware is still
detected upon execution by the desktop on-access scanner.
SOLUTION:
Desktop on-access scanner should be used to ensure that the malware
is detected upon extraction.
Filter all compressed file archives at border gateways if they are
not required.
PROVIDED AND/OR DISCOVERED BY:
fRoGGz, SecuBox Labs
OTHER REFERENCES:
SA17126:
http://secunia.com/advisories/17126/
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