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TITLE:
FreeBSD "PT_LWPINFO" Ptrace Command Denial of Service

SECUNIA ADVISORY ID:
SA22367

VERIFY ADVISORY:
http://secunia.com/advisories/22367/

CRITICAL:
Not critical

IMPACT:
DoS

WHERE:
Local system

OPERATING SYSTEM:
FreeBSD 6.x
http://secunia.com/product/6778/

DESCRIPTION:
A vulnerability has been reported in FreeBSD, which can be exploited
by malicious, local users to cause a DoS (Denial of Service).

The vulnerability is caused due to a signedness error in the
"PT_LWPINFO" ptrace command and can be exploited to trigger a kernel
panic or potentially corrupt user-space memory.

The vulnerability is reported in version 6.0-RELEASE and does
reportedly not affect 6.1-RELEASE. Other versions may also be
affected.

SOLUTION:
Grant only trusted users access to affected systems.

PROVIDED AND/OR DISCOVERED BY:
Discovered by an anonymous person and reported via iDefense Labs.

ORIGINAL ADVISORY:
iDefense Labs:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=419

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About:
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vulnerabilities.

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