Xen 4.5.x/4.6.x/4.7.x Privilege Check access control

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Xen 4.5.x/4.6.x/4.7.x. Impacted is an unknown function of the component Privilege Check. Performing a manipulation results in access control. This vulnerability was named CVE-2016-9378. The attack needs to be approached locally. There is no available exploit. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Xen 4.5.x/4.6.x/4.7.x (Virtualization Software). It has been classified as problematic. This affects some unknown processing of the component Privilege Check. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on availability.

The weakness was presented 11/22/2016 by Andrew Cooper with Citrix as XSA-196 as confirmed security advisory (Website). The advisory is shared at xenbits.xen.org. The public release was coordinated in cooperation with the project team. This vulnerability is uniquely identified as CVE-2016-9378 since 11/17/2016. The exploitability is told to be easy. It is possible to initiate the attack remotely. Required for exploitation is a authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 95493 (Fedora 25 : xen (2016-999e1a6927)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276244 (Fedora Security Update for xen (FEDORA-2016-999e1a6927)).

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 (95493), SecurityFocus (BID 94475†) and SecurityTracker (ID 1037345†). See VDB-93805, VDB-93806, VDB-93807 and VDB-93808 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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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-284 / CWE-266
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: 95493
Nessus Name: Fedora 25 : xen (2016-999e1a6927)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 58605
OpenVAS Name: Fedora Update for xen FEDORA-2016-999e1a6927
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

11/17/2016 🔍
11/22/2016 +5 days 🔍
11/22/2016 +0 days 🔍
11/22/2016 +0 days 🔍
11/25/2016 +3 days 🔍
11/25/2016 +0 days 🔍
12/05/2016 +10 days 🔍
02/22/2017 +79 days 🔍
10/04/2022 +2050 days 🔍

Sourcesinfo

Advisory: XSA-196
Researcher: Andrew Cooper
Organization: Citrix
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2016-9378 (🔍)
GCVE (CVE): GCVE-0-2016-9378
GCVE (VulDB): GCVE-100-93813
SecurityFocus: 94475 - Xen Multiple Denial of Service Vulnerabilities
SecurityTracker: 1037345

See also: 🔍

Entryinfo

Created: 11/25/2016 12:01
Updated: 10/04/2022 14:18
Changes: 11/25/2016 12:01 (72), 06/10/2019 07:31 (12), 10/04/2022 14:18 (4)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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