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Category:   OS (UNIX)  >   OpenBSD Kernel Vendors:   OpenBSD
OpenBSD IPSec getsockopt() Bug Lets Local Users Deny Service
SecurityTracker Alert ID:  1014210
SecurityTracker URL:  http://securitytracker.com/id/1014210
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Jun 16 2005
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.6, 3.7
Description:   A vulnerability was reported in OpenBSD in ip_ctloutput(). A local user can cause denial of service conditions.

A local user can invoke getsockopt(2) to get ipsec(4) credentials for a socket to trigger a kernel panic.

The flaw resides in 'sys/netinet/ip_output.c' in the ip_ctloutput() function.

The vendor credits Stefan Miltchev with reporting this vulnerability.

Impact:   A local user can cause a kernel panic.
Solution:   The vendor has issued the following fixes.

ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.7/common/002_getsockopt.patch
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.6/common/017_getsockopt.patch

Vendor URL:  www.openbsd.org/ (Links to External Site)
Cause:   Boundary error

Message History:   None.


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