Linux Foundation Xen 4.4.0 on ARM Hardware Access access control

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2.2$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Linux Foundation Xen 4.4.0 on ARM. The impacted element is an unknown function of the component Hardware Access Handler. Executing a manipulation can lead to access control. This vulnerability is tracked as CVE-2014-2915. No exploit exists. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as problematic was found in Linux Foundation Xen 4.4.0 on ARM (Virtualization Software). This vulnerability affects an unknown functionality of the component Hardware Access Handler. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect availability. CVE summarizes:

Xen 4.4.x, when running on ARM systems, does not properly restrict access to hardware features, which allows local guest users to cause a denial of service (host or guest crash) via unspecified vectors, related to (1) cache control, (2) coprocessors, (3) debug registers, and (4) other unspecified registers.

The weakness was disclosed 04/22/2014 by Thomas Leonard and Julien Grall with MySQL as XSA-93 as confirmed mailinglist post (oss-sec). The advisory is available at seclists.org. The public release has been coordinated in cooperation with the vendor. The mailinglist post contains:

This bug was publicly reported on xen-devel, before it was appreciated that there was a security problem. The public mailing list thread contains information strongly suggestive of a security bug and included example code which can crash the host.
This vulnerability was named CVE-2014-2915 since 04/18/2014. The exploitation appears to be difficult. Local access is required to approach this attack. The successful exploitation needs a single 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 advisory points out:
When running on an ARM platform Xen was not correctly configuring the hardware virtualisation platform and therefore did not prevent guests from accessing various hardware features including cache control, coprocessors, debug registers and various processor specific registers.

Applying the patch xsa93-4.4-01.patch/xsa93-4.4-02.patch/xsa93-4.4-03.patch/xsa93-4.4-04.patch/xsa93-4.4-05.patch/xsa93-4.4-06.patch is able to eliminate this problem. The bugfix is ready for download at seclists.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 (92716), SecurityFocus (BID 6718†), Secunia (SA57733†), SecurityTracker (ID 1030135†) and Vulnerability Center (SBV-44264†). The entry VDB-20143 is pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.5
VulDB Meta Temp Score: 2.2

VulDB Base Score: 2.5
VulDB Temp Score: 2.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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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: Partially

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: xsa93-4.4-01.patch/xsa93-4.4-02.patch/xsa93-4.4-03.patch/xsa93-4.4-04.patch/xsa93-4.4-05.patch/xsa93-4.4-06.patch

Timelineinfo

01/29/2003 🔍
04/18/2014 +4097 days 🔍
04/22/2014 +4 days 🔍
04/22/2014 +0 days 🔍
04/22/2014 +0 days 🔍
04/23/2014 +1 days 🔍
04/23/2014 +0 days 🔍
04/23/2014 +0 days 🔍
04/24/2014 +1 days 🔍
04/27/2014 +3 days 🔍
05/12/2026 +4397 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: XSA-93
Researcher: Thomas Leonard, Julien Grall
Organization: MySQL
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2014-2915 (🔍)
GCVE (CVE): GCVE-0-2014-2915
GCVE (VulDB): GCVE-100-13042
X-Force: 92716 - Xen hardware virtualization platform denial of service, Low Risk
SecurityFocus: 6718 - MySQL Double Free Heap Corruption Vulnerability
Secunia: 57733 - Xen ARM Hardware Access Security Issues, Not Critical
SecurityTracker: 1030135 - Xen ARM Hardware Access Flaw Lets Local Guest Users Deny Service on the Host System
Vulnerability Center: 44264 - Xen 4.4 Running ARM Systems Remote DoS via Access to Cache Control, Coprocessors or Debug Registers, Medium

See also: 🔍

Entryinfo

Created: 04/23/2014 12:51
Updated: 05/12/2026 00:15
Changes: 04/23/2014 12:51 (78), 05/26/2017 03:57 (6), 05/12/2026 00:15 (17)
Complete: 🔍
Cache ID: 216::103

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