Citrix Xen up to 4.2.1 Per-Domain Event Channel Tracking Tables access control

CVSS Meta Temp Score
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CTI Interest Score
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8.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Citrix Xen. Impacted is an unknown function of the component Per-Domain Event Channel Tracking Tables. The manipulation results in access control. This vulnerability was named CVE-2013-1920. There is no available exploit. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in Citrix Xen (Connectivity Software). It has been classified as critical. Affected is some unknown functionality of the component Per-Domain Event Channel Tracking Tables. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Xen 4.2.x, 4.1.x, and earlier, when the hypervisor is running "under memory pressure" and the Xen Security Module (XSM) is enabled, uses the wrong ordering of operations when extending the per-domain event channel tracking table, which causes a use-after-free and allows local guest kernels to inject arbitrary events and gain privileges via unspecified vectors.

The weakness was presented 04/04/2013 as confirmed advisory (Website). The advisory is available at lists.xen.org. The public release was coordinated in cooperation with the vendor. This vulnerability is traded as CVE-2013-1920 since 02/19/2013. The exploitability is told to be easy. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 70184 (GLSA-201309-24 : Xen: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166818 (SUSE Enterprise Linux Security Update for Xen (SUSE-SU-2014:0411-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at lists.xen.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (83226), Tenable (70184), SecurityFocus (BID 58880†), OSVDB (92050†) and Secunia (SA52857†). See VDB-6818, VDB-7241, VDB-8473 and VDB-63038 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 8.9

VulDB Base Score: 9.3
VulDB Temp Score: 8.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 70184
Nessus Name: GLSA-201309-24 : Xen: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 865902
OpenVAS Name: Fedora Update for xen FEDORA-2013-10136
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: lists.xen.org

Timelineinfo

02/19/2013 🔍
04/04/2013 +44 days 🔍
04/04/2013 +0 days 🔍
04/04/2013 +0 days 🔍
04/04/2013 +0 days 🔍
04/04/2013 +0 days 🔍
04/05/2013 +1 days 🔍
04/08/2013 +3 days 🔍
04/12/2013 +4 days 🔍
04/21/2013 +9 days 🔍
05/06/2021 +2937 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: lists.xen.org
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-1920 (🔍)
GCVE (CVE): GCVE-0-2013-1920
GCVE (VulDB): GCVE-100-8178

OVAL: 🔍

X-Force: 83226
SecurityFocus: 58880 - Xen CVE-2013-1920 Memory Corruption Vulnerability
Secunia: 52857 - Xen Event Channel Operations Privilege Escalation Vulnerability, Less Critical
OSVDB: 92050
SecurityTracker: 1028388 - Xen Event Channel Tracking Pointer Bug Local Privilege Escalation
Vulnerability Center: 39270 - Xen Use-After-Free Vulnerability Allows Local Arbitrary Events Injection and Privilege Escalation, Low

See also: 🔍

Entryinfo

Created: 04/08/2013 16:09
Updated: 05/06/2021 20:25
Changes: 04/08/2013 16:09 (80), 04/27/2017 17:17 (6), 05/06/2021 20:25 (3)
Complete: 🔍
Committer:
Cache ID: 216:862:103

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