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Last updated: 10/24/2014 10:39:59 AM

CVE Publication rate: 51.3

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National Cyber Awareness System

Vulnerability Summary for CVE-2014-1666

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

Overview

The do_physdev_op function in Xen 4.1.5, 4.1.6.1, 4.2.2 through 4.2.3, and 4.3.x does not properly restrict access to the (1) PHYSDEVOP_prepare_msix and (2) PHYSDEVOP_release_msix operations, which allows local PV guests to cause a denial of service (host or guest malfunction) or possibly gain privileges via unspecified vectors.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 8.3 (HIGH) (AV:A/AC:L/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore: 10.0
Exploitability Subscore: 6.5
CVSS Version 2 Metrics:
Access Vector: Local network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

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External Source: OSVDB
Name: 102536
External Source: FEDORA
Name: FEDORA-2014-1552
External Source: MLIST
Name: [oss-security] 20140123 Xen Security Advisory 87 (CVE-2014-1666) - PHYSDEVOP_{prepare,release}_msix exposed to unprivileged guests
External Source: SECUNIA
Name: 56650
Type: Advisory
External Source: SECTRACK
Name: 1029684
External Source: SUSE
Name: SUSE-SU-2014:0373
External Source: CONFIRM
Name: http://xenbits.xen.org/xsa/advisory-87.html
External Source: XF
Name: xen-cve20141666-priv-esc(90675)
External Source: BID
Name: 65125
External Source: MISC
Name: http://xenbits.xen.org/xsa/xsa87-unstable-4.3.patch
Type: Advisory; Patch Information
External Source: SUSE
Name: SUSE-SU-2014:0372

Technical Details

Vulnerability Type (View All)
  • Permissions, Privileges, and Access Control (CWE-264)