Technical Description

A vulnerability has been identified in Novell GroupWise, which could be exploited by attackers to remotely take complete control of an affected system. This issue is caused by a stack overflow error in the WebAccess agent (GWINTER.exe) when processing an overly long (more than 335 bytes) HTTP Basic authentication request sent to port 7205/TCP or 7211/TCP, which could be exploited by remote unauthenticated attackers to execute arbitrary commands with elevated privileges by sending specially crafted base64 data to a vulnerable application.

Affected Products

Novell GroupWise versions 7.x

Solution

Upgrade to Novell GroupWise version 7.0.2 (for Windows and Netware) :
http://download.novell.com/protected/Export.jsp?buildid=8RF83go0nZg~

Upgrade to Novell GroupWise version 7.0.2 (for Linux) :
http://download.novell.com/protected/Export.jsp?buildid=O9ucpbS1bK0~

References

http://www.vupen.com/english/advisories/2007/1455
http://download.novell.com/Download?buildid=8RF83go0nZg~
http://download.novell.com/Download?buildid=O9ucpbS1bK0~
http://www.zerodayinitiative.com/advisories/ZDI-07-015.html

Credits

Vulnerability reported by Tenable Network Security and ZDI

ChangeLog

2007-04-18 : Initial release

Vulnerability Management

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