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Insecure Library Loading
Not critical

grsecurity RBAC User Transition Security Issue

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Release Date:  2008-04-22    Last Update:  2008-04-28    Views:  7,811

Secunia Advisory SA29899

Where:

Local system

Impact:

Security Bypass

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


A security issue has been reported in grsecurity, which can be exploited by malicious, local users to bypass certain security restrictions.

The security issue is caused due to an error in the RBAC system when enforcing the "user_transition_deny" and "user_transition_allow" rules. This can be exploited to bypass the affected rules in calls to "sys_setfsuid()" and "sys_setfsgid()".

The security issue is reported in versions prior to 2.1.11-2.6.24.5 (2008-04-21) and 2.1.11-2.4.36.2 (2008-04-21).


Solution:
Update to 2.1.11-2.6.24.5 (2008-04-21) or 2.1.11-2.4.36.2 (2008-04-21).

Further details available to Secunia VIM customers

Provided and/or discovered by:
Reported by the vendor.

Original Advisory:
http://www.grsecurity.org/news.php

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: grsecurity RBAC User Transition Security Issue

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