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Last updated: 7/30/2014 1:19:02 PM

CVE Publication rate: 21.53

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National Cyber Awareness System

Vulnerability Summary for CVE-2013-1917

Original release date: 05/13/2013
Last revised: 04/19/2014
Source: US-CERT/NIST

Overview

Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service (hypervisor crash) by triggering a #GP fault, which is not properly handled by another IRET instruction.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 1.9 (LOW) (AV:L/AC:M/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore: 2.9
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: SUSE-SU-2014:0446
External Source: DEBIAN
Name: DSA-2662
External Source: SECTRACK
Name: 1028455
External Source: SUSE
Name: openSUSE-SU-2013:0912
External Source: SUSE
Name: SUSE-SU-2014:0411
External Source: FEDORA
Name: FEDORA-2013-6723
External Source: SUSE
Name: SUSE-SU-2014:0470
External Source: SECUNIA
Name: 55082
External Source: MLIST
Name: [oss-security] 20130418 Xen Security Advisory 44 (CVE-2013-1917) - Xen PV DoS vulnerability with SYSENTER
External Source: GENTOO
Name: GLSA-201309-24

Technical Details

Vulnerability Type (View All)