Secunia Security Advisory - Filipe Balestra and Rodrigo Rubira Branco have reported a vulnerability in FreeBSD, which can be exploited by malicious, local users to disclose potentially sensitive information.
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TITLE:
FreeBSD "fw_ioctl()" Integer Overflow Vulnerability
SECUNIA ADVISORY ID:
SA22917
VERIFY ADVISORY:
http://secunia.com/advisories/22917/
CRITICAL:
Less critical
IMPACT:
Privilege escalation
WHERE:
Local system
OPERATING SYSTEM:
FreeBSD 5.x
http://secunia.com/product/1132/
DESCRIPTION:
Filipe Balestra and Rodrigo Rubira Branco have reported a
vulnerability in FreeBSD, which can be exploited by malicious, local
users to disclose potentially sensitive information.
The vulnerability is caused due to an integer overflow within the
"fw_ioctl()" function in dev/firewire/fwdev.c. This can be exploited
to read the system memory by passing special arguments to the
function.
The vulnerability is reported in FreeBSD version 5.5. Other versions
may also be affected.
SOLUTION:
Restrict access to trusted people only.
PROVIDED AND/OR DISCOVERED BY:
Filipe Balestra and Rodrigo Rubira Branco
ORIGINAL ADVISORY:
http://www.kernelhacking.com/bsdadv1.txt
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