FreeBSD 'mount(2)' and 'nmount(2)' Multiple Stack Buffer Overflow Vulnerabilities

BID:31002

Info

FreeBSD 'mount(2)' and 'nmount(2)' Multiple Stack Buffer Overflow Vulnerabilities

Bugtraq ID: 31002
Class: Boundary Condition Error
CVE: CVE-2008-3531
Remote: No
Local: Yes
Published: Sep 03 2008 12:00AM
Updated: Aug 21 2009 03:54PM
Credit: James Gritton
Vulnerable: FreeBSD FreeBSD 7.0-STABLE
FreeBSD FreeBSD 7.0-RELEASE
Not Vulnerable:

Discussion

FreeBSD 'mount(2)' and 'nmount(2)' Multiple Stack Buffer Overflow Vulnerabilities

FreeBSD is prone to multiple stack-based buffer-overflow vulnerabilities because the kernel fails to perform adequate boundary checks on user-supplied data.

A local attacker can exploit these issues to execute arbitrary code with kernel-level privileges. Successfully exploiting these issues will result in the complete compromise of affected computers. Failed exploit attempts will cause a denial-of-service condition.

FreeBSD 7.0-RELEASE and 7.0-STABLE are vulnerable.

Exploit / POC

FreeBSD 'mount(2)' and 'nmount(2)' Multiple Stack Buffer Overflow Vulnerabilities

Core Security Technologies has developed a working commercial exploit for its CORE IMPACT product. This exploit is not otherwise publicly available or known to be circulating in the wild.

Exploit code is available.

Solution / Fix

FreeBSD 'mount(2)' and 'nmount(2)' Multiple Stack Buffer Overflow Vulnerabilities

Solution:
Fixes are available. Please see the references for more information.


FreeBSD FreeBSD 7.0-RELEASE

FreeBSD FreeBSD 7.0-STABLE

References

FreeBSD 'mount(2)' and 'nmount(2)' Multiple Stack Buffer Overflow Vulnerabilities

References:
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