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National Cyber Awareness System

Vulnerability Summary for CVE-2012-3496

Original release date:11/23/2012
Last revised:01/30/2013
Source: US-CERT/NIST

Overview

XENMEM_populate_physmap in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when translating paging mode is not used, allows local PV OS guest kernels to cause a denial of service (BUG triggered and host crash) via invalid flags such as MEMF_populate_on_demand.

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 serviceUnknown

References to Advisories, Solutions, and Tools

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External Source: CONFIRM
Name: http://support.citrix.com/article/CTX134708
Type: Advisory; Patch Information
External Source: MISC
Name: https://bugzilla.redhat.com/show_bug.cgi?id=854590
External Source: XF
Name: xen-xenmempopulatephysmap-dos(78267)
External Source: BID
Name: 55412
External Source: OSVDB
Name: 85200
External Source: MLIST
Name: [oss-security] 20120905 Xen Security Advisory 14 (CVE-2012-3496) - XENMEM_populate_physmap DoS vulnerability
External Source: DEBIAN
Name: DSA-2544
External Source: CONFIRM
Name: http://wiki.xen.org/wiki/Security_Announcements#XSA-14_XENMEM_populate_physmap_DoS_vulnerability
External Source: SECTRACK
Name: 1027481
External Source: SECUNIA
Name: 50530
Type: Advisory
External Source: SECUNIA
Name: 50472
Type: Advisory
External Source: MLIST
Name: [Xen-announce] 20120905 Xen Security Advisory 14 (CVE-2012-3496) - XENMEM_populate_physmap DoS vulnerability
Type: Advisory
External Source: SUSE
Name: openSUSE-SU-2012:1572
External Source: SUSE
Name: openSUSE-SU-2012:1174
External Source: SUSE
Name: openSUSE-SU-2012:1172
External Source: SUSE
Name: SUSE-SU-2012:1162
External Source: SUSE
Name: SUSE-SU-2012:1133
External Source: SUSE
Name: SUSE-SU-2012:1132

Vulnerable software and versions

Nav control imageConfiguration 1
spacerNav control imageOR
spacerspacerNav control image* cpe:/o:xen:xen:4.0.0
spacerspacerNav control image* cpe:/o:xen:xen:4.1.0
spacerspacerNav control image* cpe:/o:xen:xen:4.2.0
spacerspacerNav control image* cpe:/a:citrix:xenserver:6.0.2 and previous versions
* Denotes Vulnerable Software

Technical Details

Vulnerability Type (View All)