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Last updated: 9/19/2014 5:52:05 AM

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National Cyber Awareness System

Vulnerability Summary for CVE-2001-0268

Original release date: 05/03/2001
Last revised: 09/10/2008
Source: US-CERT/NIST

Overview

The i386_set_ldt system call in NetBSD 1.5 and earlier, and OpenBSD 2.8 and earlier, when the USER_LDT kernel option is enabled, does not validate a call gate target, which allows local users to gain root privileges by creating a segment call gate in the Local Descriptor Table (LDT) with a target that specifies an arbitrary kernel address.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 7.2 (HIGH) (AV:L/AC:L/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: BID
Name: 2739
US-CERT Vulnerability Note: CERT-VN
Name: VU#358960
External Source: CALDERA
Name: CSSA-2001-SCO.35
External Source: OPENBSD
Name: 20010302 The USER_LDT kernel option allows an attacker to gain access to privileged areas of kernel memory.
External Source: XF
Name: user-ldt-validation(6222)
External Source: NETBSD
Name: NetBSD-SA:2001-002
Type: Advisory; Patch Information
External Source: BUGTRAQ
Name: 20010219 Re: your mail
External Source: OSVDB
Name: 6141

Vulnerable software and versions

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* cpe:/o:netbsd:netbsd:1.5 and previous versions
* cpe:/o:openbsd:openbsd:2.8 and previous versions
* Denotes Vulnerable Software
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Technical Details

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