XenSource Xen 4.3.x/4.4.x/4.5.x/4.6.x on x86/ARM HYPERVISOR_memory_op 7pk security

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

A vulnerability was found in XenSource Xen 4.3.x/4.4.x/4.5.x/4.6.x on x86/ARM (Virtualization Software). It has been rated as critical. Affected by this issue is the function HYPERVISOR_memory_op. The manipulation with an unknown input leads to a 7pk security vulnerability. Using CWE to declare the problem leads to CWE-254. Impacted is confidentiality, integrity, and availability.

The weakness was presented 12/08/2015 by Julien Grall as XSA-158 as confirmed security advisory (Website). The advisory is shared for download at xenbits.xen.org. This vulnerability is handled as CVE-2015-8338 since 11/25/2015. The attack may be launched remotely. A simple authentication is needed for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1211.

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 vulnerability database at Tenable (92614). See 87542, 87720, 87769 and 90367 for similar entries.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

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

CVSSv2info

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

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Exploitinginfo

Class: 7pk security
CWE: CWE-254
ATT&CK: T1211

Local: No
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: 867773
OpenVAS Name: Fedora Update for xen FEDORA-2015-08
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

11/25/2015 🔍
12/08/2015 +13 days 🔍
12/08/2015 +0 days 🔍
12/08/2015 +0 days 🔍
12/11/2015 +3 days 🔍
12/11/2015 +0 days 🔍
12/13/2015 +2 days 🔍
12/17/2015 +4 days 🔍
07/29/2016 +225 days 🔍
06/30/2022 +2162 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: XSA-158
Researcher: Julien Grall
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-8338 (🔍)
OVAL: 🔍

SecurityTracker: 1034390
Vulnerability Center: 55184 - Xen through 4.6.0 on ARM Remote DoS Vulnerability, Medium
SecurityFocus: 78920

See also: 🔍

Entryinfo

Created: 12/11/2015 04:36 PM
Updated: 06/30/2022 09:05 PM
Changes: 12/11/2015 04:36 PM (54), 05/14/2018 10:26 AM (25), 06/30/2022 09:05 PM (3)
Complete: 🔍

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