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Last updated: 10/31/2014 12:25:32 PM

CVE Publication rate: 47

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National Cyber Awareness System

Vulnerability Summary for CVE-2012-5515

Original release date: 12/13/2012
Last revised: 04/19/2014
Source: US-CERT/NIST

Overview

The (1) XENMEM_decrease_reservation, (2) XENMEM_populate_physmap, and (3) XENMEM_exchange hypercalls in Xen 4.2 and earlier allow local guest administrators to cause a denial of service (long loop and hang) via a crafted extent_order value.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.7 (MEDIUM) (AV:L/AC:M/Au:N/C:N/I:N/A:C) (legend)
Impact Subscore: 6.9
Exploitability Subscore: 3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: SUSE
Name: openSUSE-SU-2013:0636
External Source: MLIST
Name: [Xen-announce] 20121203 Xen Security Advisory 31 (CVE-2012-5515) - Several memory hypercall operations allow invalid extent order values
Type: Advisory
External Source: GENTOO
Name: GLSA-201309-24
External Source: SUSE
Name: SUSE-SU-2014:0446
External Source: SUSE
Name: openSUSE-SU-2013:0637
External Source: OSVDB
Name: 88127
External Source: SECUNIA
Name: 51468
Type: Advisory
External Source: DEBIAN
Name: DSA-2582
External Source: CONFIRM
Name: http://support.citrix.com/article/CTX135777
External Source: SUSE
Name: SUSE-SU-2012:1606
External Source: SECUNIA
Name: 51486
Type: Advisory
External Source: SUSE
Name: openSUSE-SU-2012:1687
External Source: SUSE
Name: openSUSE-SU-2012:1685
External Source: SUSE
Name: SUSE-SU-2012:1615
External Source: SECUNIA
Name: 55082
External Source: MLIST
Name: [oss-security] 20121203 Xen Security Advisory 31 (CVE-2012-5515) - Several memory hypercall operations allow invalid extent order values
External Source: SUSE
Name: openSUSE-SU-2013:0133
External Source: SECUNIA
Name: 51397
Type: Advisory
External Source: SUSE
Name: SUSE-SU-2014:0470
External Source: SECUNIA
Name: 51487
Type: Advisory
External Source: BID
Name: 56798
External Source: XF
Name: xen-extentorder-dos(80479)
External Source: SECUNIA
Name: 51495
Type: Advisory

Technical Details

Vulnerability Type (View All)