XenSource Xen libxl access control

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in XenSource Xen. The affected element is an unknown function of the component libxl. The manipulation results in access control. This vulnerability is known as CVE-2016-4962. Attacking locally is a requirement. No exploit is available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in XenSource Xen (Virtualization Software) (the affected version unknown). It has been classified as critical. Affected is an unknown part of the component libxl. 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.

The weakness was published 06/02/2016 with Citrix as XSA-175 as confirmed security advisory (Website). The advisory is shared for download at xenbits.xen.org. This vulnerability is traded as CVE-2016-4962 since 05/24/2016. The exploitability is told to be easy. It is possible to launch the attack remotely. A authentication is necessary for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 92614 (Debian DSA-3633-1 : xen - security update (Bunker Buster)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175798 (Debian Security Update for xen (DSA 3633-1)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (92614), SecurityFocus (BID 91006†) and SecurityTracker (ID 1036023†). Similar entries are available at VDB-79748, VDB-87542, VDB-87769 and VDB-90367. 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: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.7
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 92614
Nessus Name: Debian DSA-3633-1 : xen - security update (Bunker Buster)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 11027
OpenVAS Name: Fedora Update for xen FEDORA-2016-389be30b95
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: 🔍

Timelineinfo

05/24/2016 🔍
06/02/2016 +9 days 🔍
06/02/2016 +0 days 🔍
06/02/2016 +0 days 🔍
06/02/2016 +0 days 🔍
06/03/2016 +1 days 🔍
06/07/2016 +4 days 🔍
07/29/2016 +52 days 🔍
08/22/2022 +2215 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: XSA-175
Organization: Citrix
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4962 (🔍)
GCVE (CVE): GCVE-0-2016-4962
GCVE (VulDB): GCVE-100-87720

OVAL: 🔍

SecurityFocus: 91006 - Xen CVE-2016-4962 Privilege Escalation Vulnerability
SecurityTracker: 1036023

See also: 🔍

Entryinfo

Created: 06/03/2016 11:59
Updated: 08/22/2022 19:14
Changes: 06/03/2016 11:59 (70), 12/28/2018 10:56 (14), 08/22/2022 19:14 (3)
Complete: 🔍
Cache ID: 216:B9E:103

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