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Netsikker nu! 2008
 
Citadel SMTP "makeuserkey()" Buffer Overflow Vulnerability
Secunia Advisory: SA28590
Release Date: 2008-01-22
Last Update: 2008-02-04
Popularity: 5,722 views

Critical:
Highly critical
Impact: System access
Where: From remote
Solution Status: Vendor Patch

Software:Citadel 7.x

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CVE reference:CVE-2008-0394


Description:
prdelka has discovered a vulnerability in Citadel, which can be exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to a boundary error within the "makeuserkey()" function in user_ops.c. This can be exploited to cause a stack-based buffer overflow via an overly long argument to the "RCPT TO" SMTP command.

Successful exploitation allows execution of arbitrary code.

The vulnerability is confirmed in version 7.10. Other versions may also be affected.

Solution:
Update to version 7.24.

Provided and/or discovered by:
prdelka. Additional information provided by Secunia Research.

Changelog:
2008-02-04: Added CVE reference.


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