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OpenLDAP slapd RWM Overlay Use-After-Free Denial of Service Vulnerability

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Release Date:  2013-10-17    Last Update:  2013-10-21    Views:  5,859

Secunia Advisory SA55238

Where:

From local network

Impact:

DoS

Solution Status:

Unpatched

Software:

CVE Reference(s):

Description


Seven Principles AG has reported a vulnerability in OpenLDAP, which can be exploited by malicious users to cause a DoS (Denial of Service).

The vulnerability is caused due to a reference counting error within the rwm overlay implementation and can be exploited to cause a segfault by sending a sequence of a valid search request followed by an unbind request.

Successful exploitation requires slapd to be started with the rwm overlay.

The vulnerability is reported in version 2.4.36. Other versions may also be affected.


Solution:
No official solution is currently available.

Provided and/or discovered by:
Michael Vishchers, Seven Principles AG.

Original Advisory:
http://www.openldap.org/its/index.cgi/Incoming?id=7723

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: OpenLDAP slapd RWM Overlay Use-After-Free Denial of Service Vulnerability

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