TippingPoint Zero Day Initiative

Symantec AntiVirus Engine RAR File Parsing DoS Vulnerability

ZDI-07-039: July 12th, 2007

CVE ID

Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows attackers to create a denial of service condition on software with vulnerable installations of the Symantec's AntiVirus engine. Authentication is not required to exploit this vulnerability.

The specific flaw resides in a forged PACK_SIZE field of a RAR file header. By setting this field to a specific value an infinite loop denial of service condition will occur when the scanner processes the file.

Vendor Response

Symantec has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2006-11-01 - Vulnerability reported to vendor
    2007-07-12 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Anonymous