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Last updated: 10/31/2014 4:06:13 PM

CVE Publication rate: 47

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National Cyber Awareness System

Vulnerability Summary for CVE-2014-1642

Original release date: 01/26/2014
Last revised: 04/19/2014
Source: US-CERT/NIST

Overview

The IRQ setup in Xen 4.2.x and 4.3.x, when using device passthrough and configured to support a large number of CPUs, frees certain memory that may still be intended for use, which allows local guest administrators to cause a denial of service (memory corruption and hypervisor crash) and possibly execute arbitrary code via vectors related to an out-of-memory error that triggers a (1) use-after-free or (2) double free.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.4 (MEDIUM) (AV:L/AC:M/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
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: SECUNIA
Name: 56557
Type: Advisory
External Source: BID
Name: 65097
External Source: CONFIRM
Name: http://xenbits.xen.org/xsa/advisory-83.html
Type: Advisory
External Source: SUSE
Name: SUSE-SU-2014:0373
External Source: XF
Name: xen-irq-cve20141642-code-exec(90649)
External Source: SECTRACK
Name: 1029679
External Source: FEDORA
Name: FEDORA-2014-1552
External Source: OSVDB
Name: 102406
External Source: MLIST
Name: [oss-security] 20140123 Xen Security Advisory 83 (CVE-2014-1642) - Out-of-memory condition yielding memory corruption during IRQ setup

Technical Details

Vulnerability Type (View All)
  • Resource Management Errors (CWE-399)