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Last updated: 10/25/2014 10:29:48 AM

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National Cyber Awareness System

Vulnerability Summary for CVE-2013-4494

Original release date: 11/02/2013
Last revised: 04/19/2014
Source: US-CERT/NIST

Overview

Xen before 4.1.x, 4.2.x, and 4.3.x does not take the page_alloc_lock and grant_table.lock in the same order, which allows local guest administrators with access to multiple vcpus to cause a denial of service (host deadlock) via unspecified vectors.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.2 (MEDIUM) (AV:A/AC:M/Au:S/C:N/I:N/A:C) (legend)
Impact Subscore: 6.9
Exploitability Subscore: 4.4
CVSS Version 2 Metrics:
Access Vector: Local network exploitable
Access Complexity: Medium
Authentication: Required to exploit
Impact Type: Allows disruption of service

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External Source: SUSE
Name: SUSE-SU-2014:0446
External Source: SUSE
Name: openSUSE-SU-2013:1876
External Source: REDHAT
Name: RHSA-2014:0108
External Source: MLIST
Name: [oss-security] 20131101 Re: Xen Security Advisory 73 - Lock order reversal between page allocation and grant table locks
External Source: SUSE
Name: SUSE-SU-2014:0470
External Source: SUSE
Name: SUSE-SU-2014:0411
External Source: MLIST
Name: [oss-security] 20131101 Xen Security Advisory 73 - Lock order reversal between page allocation and grant table locks

Technical Details

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