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Last updated: 4/29/2016 7:34:33 AM

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Vulnerability Summary for CVE-2006-0145

Original release date: 01/09/2006
Last revised: 09/05/2008


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.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.6 MEDIUM
Impact Subscore: 6.4
Exploitability Subscore: 3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Provides user account access, Allows partial confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service

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External Source: SREASON
Name: 405
External Source: BUGTRAQ
Name: 20060202 [SLAB] NetBSD / OpenBSD kernfs_xread patch evasion
External Source: OSVDB
Name: 22293
External Source: XF
Name: netbsd-kernfs-memory-disclosure(24035)
External Source: MISC
Name: http://www.securitylab.net/research/2006/02/advisory_netbsd_openbsd_kernfs.html
Type: Advisory
External Source: BID
Name: 16173
Type: Patch Information
External Source: NETBSD
Name: NetBSD-SA2006-001

Technical Details

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