Spyware, Viruses, & Security forum

General discussion

VULNERABILITIES - October 6, 2004

by Marianna Schmudlach / October 5, 2004 10:49 PM PDT

Symantec Norton AntiVirus MS-DOS Device Name Handling Weakness

CRITICAL:
Not critical

IMPACT:
Security Bypass

WHERE:
Local system

SOFTWARE:
Symantec Norton AntiVirus 2003
http://secunia.com/product/175/
Symantec Norton AntiVirus 2004
http://secunia.com/product/2800/
Symantec Norton AntiVirus 2005
http://secunia.com/product/4009/

DESCRIPTION:
Kurt Seifried has reported a weakness in Symantec Norton AntiVirus,
which can be exploited by malware to bypass certain scanning
functionality.

The problem is caused due to an error within the handling of files
and directories on the system with reserved MS-DOS device names and
can be exploited by including malware in a file or directory with
such a name (e.g. "prn" or "aux").

Successful exploitation causes malware to evade detection during
automatic and manual scans.

NOTE: Malware will reportedly still be detected by the email scanning
functionality and upon execution.

SOLUTION:
The vendor has issued a fix for Symantec Norton AntiVirus 2004, which
is available via LiveUpdate.

The fix will be available for other versions via LiveUpdate later.

http://secunia.com/advisories/12734/

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