Security Vulnerability: Integer overflow stack corruption

This document (3694858) is provided subject to the disclaimer at the end of this document.

Environment

Novell eDirectory 8.8 for All Platforms
Novell eDirectory 8.7.3 for All Platforms

Situation

The specific flaw exists within the ds module loaded by dhost, bound by default to TCP port 524. Flawed arithmetic applied to a user-supplied value results in an integer overflow and subsequently a
complete stack smash allowing an attacker to execute arbitrary code via SEH redirection.

Resolution

To resolve this issue in eDirectory 8.8.2:

Apply eDir 8.8.2 ftf2 or later

To resolve this issue in eDirectory 8.7.3:

Apply eDir 8.7.3 SP10b or later


Status

Security Alert

Additional Information

The vulnerability was reported by Sebastian Apelt through TippingPoint and the Zero Day Initiative.

http://www.zerodayinitiative.com/advisories/ZDI-CAN-276.html

ZDI-CAN-276: Integer overflow stack corruption


+ Advanced eDirectory Troubleshooting

Document

Document ID:3694858
Creation Date:03-10-2008
Modified Date:10-15-2009
Novell Product:eDirectory

Disclaimer

The Origin of this information may be internal or external to Novell. Novell makes all reasonable efforts to verify this information. However, the information provided in this document is for your information only. Novell makes no explicit or implied claims to the validity of this information.
Any trademarks referenced in this document are the property of their respective owners. Consult your product manuals for complete trademark information.