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>> FreeBSD "nmount" Buffer Overflow Privilege Escalation Vulnerability

Title : FreeBSD "nmount" Buffer Overflow Privilege Escalation Vulnerability
VUPEN ID : VUPEN/ADV-2008-2499
CVE ID : CVE-2008-3531
CWE ID : CWE-119
Rated as : Moderate Risk 
Remotely Exploitable : No
Locally Exploitable : Yes
Release Date : 2008-09-05


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format  Receive VUPEN Security notifications by SMS 

A vulnerability has been identified in FreeBSD, which could be exploited by malicious users to gain elevated privileges. This issue is caused by a buffer overflow error when processing user-supplied arguments passed to the "nmount" system call, which could be exploited by local attackers to execute arbitrary code with kernel privileges.

Affected Products

FreeBSD version 7.x

Solution

Apply patch :
# fetch http://security.FreeBSD.org/patches/SA-08:08/nmount.patch
# fetch http://security.FreeBSD.org/patches/SA-08:08/nmount.patch.asc

References

http://www.vupen.com/english/advisories/2008/2499
http://security.freebsd.org/advisories/FreeBSD-SA-08:08.nmount.asc

Credits

Vulnerability reported by James Gritton.

ChangeLog

2008-09-05 : Initial release

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