ZDI-06-036: Novell Netmail User Authentication Buffer Overflow Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-06-036.html October 31, 2006
-- CVE ID: CVE-2006-5478
-- Affected Vendor: Novell
-- Affected Products: Netmail 3.5.2 Novell eDirectory 8.8.1
-- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability since October 31, 2006 by Digital Vaccine protection filter ID 4693. For further product information on the TippingPoint IPS:
-- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Novell Netmail. Exploitation does not require authentication.
The specific flaw exists within the user authentication component of Novell Netmail. The routine responsible for authenticating Netmail users lacks adequate bounds checking when processing a username containing one or more period (.) characters. The affected code is reused by several Netmail services including SMTP, POP, IMAP, HTTP and the proprietary NMAP. Each of these services is vulnerable to an exploitable stack-based buffer overflow.
-- Vendor Response: Novell has issued an update to correct this vulnerability. More details can be found at:
-- Disclosure Timeline: 2006.09.08 - Vulnerability reported to vendor 2006.10.31 - Digital Vaccine released to TippingPoint customers 2006.10.31 - Public release of advisory
-- Credit: This vulnerability was discovered by an anonymous researcher.
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