OpenLDAP 'selfwrite' Access Control Error May Let Remote Authenticated Users Make Unauthorized Attribute Modifications
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SecurityTracker Alert ID: 1016783
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SecurityTracker URL: http://securitytracker.com/id?1016783
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CVE Reference: CVE-2006-4600
(Links to External Site)
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Updated: Jun 8 2008
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Original Entry Date: Sep 4 2006
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Impact: Modification of user information
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Fix Available: Yes
Exploit Included: Yes
Vendor Confirmed: Yes
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Version(s): prior to 2.3.25
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Description: A vulnerability was reported in OpenLDAP. A remote authenticated user may be able to make unauthorized modifications.
The software does not properly enforce the 'selfwrite' access control parameter. A remote authenticated user with 'selfwrite' privileges
as specified in an access control list may be able to make unauthorized modifications to the specified attributes.
Howard Chu
reported this vulnerability in June 2006.
The original bug report is available at:
http://www.openldap.org/its/index.cgi/Software%20Bugs?id=4587
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Impact: A remote authenticated user may be able to make unauthorized attribute modifications.
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Solution: The vendor has issued a fixed version (2.3.25), available at:
http://www.openldap.org/software/download/
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Vendor URL: openldap.org/ (Links to External Site)
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Cause: Access control error
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Underlying OS: Linux (Any), UNIX (Any)
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Message History:
None.
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Source Message Contents
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Date: Mon, 4 Sep 2006 13:13:43 -0400
Subject: OpenLDAP vulnerability
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http://www.openldap.org/its/index.cgi/Software%20Bugs?id=4587
> An ACL of the form
access to dn.subtree="ou=groups,dc=example,dc=com" attr=member by * selfwrite
>
> is intended to only allow users to add/delete their own DN to the target
> attribute. Currently it allows any DNs to be modified.
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