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.
5.7	$0-$5k	0.00

A vulnerability was found in Linux Foundation Xen 4.4.0 on ARM (Virtualization Software). It has been rated as problematic. This issue affects an unknown code block of the component Virtual Address Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, and integrity. The summary by CVE is:

Xen 4.4.x, when running on an ARM system, does not properly check write permissions on virtual addresses, which allows local guest administrators to gain privileges via unspecified vectors.

The weakness was published 06/04/2014 by Julien Grall as XSA-98 as confirmed advisory (Website). The advisory is shared at xenbits.xenproject.org. The public release has been coordinated with Linux Foundation. The identification of this vulnerability is CVE-2014-3969 since 06/04/2014. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue. The advisory points out:

A guest running on a vulnerable system is able to write to memory which should be read-only. This includes supposedly read only foreign mappings established using the grant table mechanism. Such read-only mappings are commonly used as part of the paravirtualised I/O drivers (such as guest disk write and network transmit).

Applying the patch xsa98-4.4-01.patch is able to eliminate this problem. The bugfix is ready for download at xenbits.xenproject.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (93626).

Productinfo

Type

• Virtualization Software

Vendor

• Linux Foundation

Name

• Xen

Version

• 4.4.0

License

• open-source

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
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: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: xsa98-4.4-01.patch

Timelineinfo

06/04/2014 🔍
06/04/2014 +0 days 🔍
06/04/2014 +0 days 🔍
06/04/2014 +0 days 🔍
06/05/2014 +1 days 🔍
06/05/2014 +0 days 🔍
06/05/2014 +0 days 🔍
06/05/2014 +0 days 🔍
06/05/2014 +0 days 🔍
06/08/2014 +3 days 🔍
05/30/2017 +1087 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: XSA-98
Researcher: Julien Grall
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2014-3969 (🔍)
X-Force: 93626 - Xen guest memory privilege escalation, Medium Risk
SecurityTracker: 1030333 - Xen ARM Guest Memory Permission Check Flaw Lets Local Users Gain Elevated Privileges
Vulnerability Center: 44795 - Xen 4.4.x Local Network Host Privilege Vulnerability via Unspecified Vectors, High
SecurityFocus: 67819 - Xen CVE-2014-3969 Local Privilege Escalation Vulnerability
Secunia: 58975 - Xen ARM Guest Memory Access Security Bypass Vulnerability, Less Critical

Entryinfo

Created: 06/05/2014 11:22
Updated: 05/30/2017 09:13
Changes: 06/05/2014 11:22 (75), 05/30/2017 09:13 (7)
Complete: 🔍

Discussion

Do you need the next level of professionalism?

Upgrade your account now!