Advisory Details

October 31st, 2006

Novell Netmail User Authentication Buffer Overflow Vulnerability

ZDI-06-036
ZDI-CAN-076

CVE ID CVE-2006-5478
CVSS SCORE
AFFECTED VENDORS Novell
AFFECTED PRODUCTS NetMail
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 4693. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
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.

ADDITIONAL DETAILS Novell has issued an update to correct this vulnerability. More details can be found at:
Novell TID #3096026
DISCLOSURE TIMELINE
  • 2006-09-08 - Vulnerability reported to vendor
  • 2006-10-31 - Coordinated public release of advisory
CREDIT Anonymous
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