ZDI-07-072: Novell Netmail AntiVirus Agent Multiple Overflow Vulnerabilities

Type securityvulns
Reporter Securityvulns
Modified 2007-12-13T00:00:00


ZDI-07-072: Novell NetMail AntiVirus Agent Multiple Heap Overflow Vulnerabilities http://www.zerodayinitiative.com/advisories/ZDI-07-072.html December 10, 2007

-- CVE ID: CVE-2007-6302

-- Affected Vendor: Novell

-- Affected Products: NetMail 3.5.2

-- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 5219, 5225. For further product information on the TippingPoint IPS:


-- Vulnerability Details: These vulnerabilities allow attackers to execute arbitrary code on vulnerable installations of Novell NetMail. User interaction is not required to exploit this vulnerability.

The specific flaws exist in the AntiVirus agent which listens on a random high TCP port. The avirus.exe service protocol reads a user-supplied ASCII integer value as an argument to a memory allocation routine. The specified size is added to without any integer overflow checks and can therefore result in an under allocation. A subsequent memory copy operation can then corrupt the heap and eventually result in arbitrary code execution.

-- Vendor Response: Novell has issued an update to correct this vulnerability. More details can be found at:


-- Disclosure Timeline: 2007.02.16 - Vulnerability reported to vendor 2007.12.10 - Coordinated public release of advisory

-- Credit: This vulnerability was discovered by Tenable Network Security.

-- About the Zero Day Initiative (ZDI): Established by TippingPoint, The Zero Day Initiative (ZDI) represents a best-of-breed model for rewarding security researchers for responsibly disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research through the ZDI can find more information and sign-up at:


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