Vulnerability CVE-2006-0145
Published: 2006-01-09   Modified: 2012-02-12

Description:
The kernfs_xread function in kernfs in NetBSD 1.6 through 2.1, and OpenBSD 3.8, does not properly validate file offsets against negative 32-bit values that occur as a result of truncation, which allows local users to read arbitrary kernel memory and gain privileges via the lseek system call.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
NetBSD / OpenBSD kernfs_xread patch evasion
SecurityLab Rese...
03.02.2006

Type:

CWE-Other

CVSS2 => (AV:L/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.6/10
6.4/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Netbsd -> Netbsd 

 References:
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-001.txt.asc
http://securityreason.com/securityalert/405
http://www.securityfocus.com/archive/1/423827/100/0/threaded
http://www.securityfocus.com/bid/16173
http://www.securitylab.net/research/2006/02/advisory_netbsd_openbsd_kernfs.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/24035
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