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util-linux Privilege Escalation Vulnerability Advisory Available in Danish  Advisory Available in German 

Secunia Advisory: SA27145  
Release Date: 2007-10-09

Critical:
Not critical
Impact: Privilege escalation
Where: Local system
Solution Status: Vendor Workaround

Software:util-linux 2.x

CVE reference:CVE-2007-5191 (Secunia mirror)



Description:
A vulnerability has been reported in util-linux, which potentially can be exploited by malicious, local users to perform certain actions with escalated privileges.

The vulnerability is caused due to the mount and umount programs incorrectly checking the return values of the "setuid()" and "setgid()" functions when dropping privileges. This can potentially be exploited to perform certain actions with escalated privileges via e.g. the mount.nfs utility.

The vulnerability is reported in version 2.12r. Other versions may also be affected.

Solution:
Fixed in the util-linux-ng repository.
http://git.kernel.org/?p=utils/util-l...eb2c7ac1b00b6083905957837a271e80b187e

Provided and/or discovered by:
Ludwig Nussel

Original Advisory:
http://git.kernel.org/?p=utils/util-l...eb2c7ac1b00b6083905957837a271e80b187e



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

1 Related Secunia Security Advisories

1. util-linux umount "-r" Re-Mounting Security Issue


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