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

Summaryinfo

A vulnerability was found in XenSource Xen 4.3.x/4.4.x/4.5.x/4.6.x on x86/ARM and classified as problematic. This impacts the function HYPERVISOR_memory_op. Such manipulation leads to 7pk security. This vulnerability is listed as CVE-2015-8338. The attack must be carried out locally. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

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 databases at Tenable (92614), SecurityFocus (BID 78920†), SecurityTracker (ID 1034390†) and Vulnerability Center (SBV-55184†). See VDB-87542, VDB-87720, VDB-87769 and VDB-90367 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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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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VulDB Base Score: 🔍
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Exploitinginfo

Class: 7pk security
CWE: CWE-254
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: 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: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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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 (🔍)
GCVE (CVE): GCVE-0-2015-8338
GCVE (VulDB): GCVE-100-79748

OVAL: 🔍

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

See also: 🔍

Entryinfo

Created: 12/11/2015 16:36
Updated: 06/30/2022 21:05
Changes: 12/11/2015 16:36 (54), 05/14/2018 10:26 (25), 06/30/2022 21:05 (3)
Complete: 🔍
Cache ID: 216::103

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