OpenBSD 'ptrace()' Local Denial of Service Vulnerability

Bugtraq ID:	38039
Class:	Unknown
CVE:
Remote:	No
Local:	Yes
Published:	Jan 29 2010 12:00AM
Updated:	Jan 29 2010 12:00AM
Credit:	OpenBSD
Vulnerable:	OpenBSD OpenBSD 4.6 OpenBSD OpenBSD 4.5
Not Vulnerable:

OpenBSD 'ptrace()' Local Denial of Service Vulnerability

OpenBSD is prone to a local denial-of-service vulnerability.

Attackers can exploit this issue to cause the kernel to enter an infinite loop, resulting in a denial-of-service condition.

OpenBSD 4.5 and 4.6 are vulnerable; other versions may also be affected.

OpenBSD 'ptrace()' Local Denial of Service Vulnerability

Currently we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

OpenBSD 'ptrace()' Local Denial of Service Vulnerability

Solution:
Patches are available. Please see the references for details.


OpenBSD OpenBSD 4.6

• OpenBSD 005_ptrace.patch
  ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.6/common/005_ptrace.patch

OpenBSD OpenBSD 4.5

• OpenBSD 011_ptrace.patch
  ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.5/common/011_ptrace.patch

OpenBSD 'ptrace()' Local Denial of Service Vulnerability

References:

• OpenBSD Errata Page (OpenBSD)