National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2012-3495 Detail

Current Description

The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 6.1 MEDIUM
Vector: (AV:L/AC:L/Au:N/C:P/I:P/A:C) (V2 legend)
Impact Subscore: 8.5
Exploitability Subscore: 3.9


Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Complete
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
http://lists.xen.org/archives/html/xen-announce/2012-09/msg00001.html
http://security.gentoo.org/glsa/glsa-201309-24.xml
http://support.citrix.com/article/CTX134708
http://wiki.xen.org/wiki/Security_Announcements#XSA-13_hypercall_physdev_get_free_pirq_vulnerability
http://www.openwall.com/lists/oss-security/2012/09/05/6
http://www.securityfocus.com/bid/55406
http://www.securitytracker.com/id?1027480
http://xenbits.xen.org/hg/xen-4.1-testing.hg/rev/6779ddca8593
https://security.gentoo.org/glsa/201604-03

Technical Details

Vulnerability Type (View All)

  • Improper Input Validation (CWE-20)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:citrix:xenserver:5.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:citrix:xenserver:5.5:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:citrix:xenserver:5.6:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:citrix:xenserver:5.6:fp1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:citrix:xenserver:5.6:sp2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:citrix:xenserver:6.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:citrix:xenserver:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
6.0.2
 cpe:2.3:o:xen:xen:4.1.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:xen:xen:4.1.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:xen:xen:4.1.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:xen:xen:4.1.3:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2012-3495
NVD Published Date:
11/23/2012
NVD Last Modified:
06/30/2017