CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.5	$0-$5k	0.00

Summaryinfo

A vulnerability described as problematic has been identified in XenSource Xen 4.0/4.1/4.2/4.4. Affected by this vulnerability is an unknown functionality of the component vcpu Pointer Array. Executing a manipulation can lead to resource management. This vulnerability appears as CVE-2015-7969. There is no available exploit. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability classified as problematic was found in XenSource Xen 4.0/4.1/4.2/4.4 (Virtualization Software). This vulnerability affects an unknown code block of the component vcpu Pointer Array. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability.

The weakness was presented 10/29/2015 by Jan Beulich with Citrix as XSA-149 as confirmed security advisory (Website). The advisory is available at xenbits.xen.org. This vulnerability was named CVE-2015-7969 since 10/23/2015. The exploitation appears to be easy. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 86840 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168296 (SUSE Enterprise Linux Security update for xen (SUSE-SU-2015:2306-1)).

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 X-Force (107668), Tenable (86840), SecurityFocus (BID 77364†) and Vulnerability Center (SBV-54041†). See VDB-79345 and VDB-79749 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Virtualization Software

Vendor

• XenSource

Name

• Xen

Version

• 4.0
• 4.1
• 4.2
• 4.4

License

• open-source

Website

• Vendor: https://www.citrix.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.5

VulDB Base Score: 4.0
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 86840
Nessus File: 🔍
Nessus Risk: 🔍

OpenVAS ID: 703414
OpenVAS Name: Debian Security Advisory DSA 3414-1 (xen - security update)
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

10/23/2015 🔍
10/29/2015 +6 days 🔍
10/29/2015 +0 days 🔍
10/29/2015 +0 days 🔍
10/29/2015 +0 days 🔍
10/30/2015 +1 days 🔍
10/30/2015 +0 days 🔍
10/30/2015 +0 days 🔍
06/25/2022 +2430 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: XSA-149
Researcher: Jan Beulich
Organization: Citrix
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-7969 (🔍)
GCVE (CVE): GCVE-0-2015-7969
GCVE (VulDB): GCVE-100-78958

OVAL: 🔍

X-Force: 107668 - Xen pointer array denial of service
SecurityFocus: 77364 - Xen CVE-2015-7969 Multiple Denial of Service Vulnerabilities
SecurityTracker: 1034033
Vulnerability Center: 54041 - Xen 4.0 - 4.6 and 4.6.* Remote DoS due to Memory Leak, Medium

See also: 🔍

Entryinfo

Created: 10/30/2015 09:38
Updated: 06/25/2022 14:26
Changes: 10/30/2015 09:38 (70), 03/02/2018 09:34 (6), 06/25/2022 14:23 (4), 06/25/2022 14:26 (1)
Complete: 🔍
Cache ID: 216:510:103

Discussion

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