XenSource Xen 3.4/4.0/4.1/4.2 MSI-X resource management

CVSS Meta Temp Score
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CTI Interest Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in XenSource Xen 3.4/4.0/4.1/4.2. This affects an unknown part of the component MSI-X Handler. Executing a manipulation can lead to resource management. This vulnerability is tracked as CVE-2015-4105. No exploit exists. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as problematic was found in XenSource Xen 3.4/4.0/4.1/4.2 (Virtualization Software). This vulnerability affects an unknown code block of the component MSI-X Handler. 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. CVE summarizes:

Xen 3.3.x through 4.5.x enables logging for PCI MSI-X pass-through error messages, which allows local x86 HVM guests to cause a denial of service (host disk consumption) via certain invalid operations.

The weakness was disclosed 06/02/2015 by Jan Beulich with SuSE as XSA-130 as confirmed security advisory (Website). The advisory is available at xenbits.xen.org. This vulnerability was named CVE-2015-4105 since 05/27/2015. 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 84167 (Debian DSA-3284-1 : qemu - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370035 (Citrix XenServer Security Update (CTX201145)).

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 (103545), Tenable (84167), SecurityFocus (BID 74948†), SecurityTracker (ID 1032465†) and Vulnerability Center (SBV-50374†). The entries VDB-74497, VDB-75680, VDB-75681 and VDB-75683 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

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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

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

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Nessus ID: 84167
Nessus Name: Debian DSA-3284-1 : qemu - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703284
OpenVAS Name: Debian Security Advisory DSA 3284-1 (qemu - security update)
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: 🔍
Exposure Time: 🔍

Timelineinfo

05/27/2015 🔍
06/02/2015 +6 days 🔍
06/02/2015 +0 days 🔍
06/02/2015 +0 days 🔍
06/03/2015 +1 days 🔍
06/03/2015 +0 days 🔍
06/03/2015 +0 days 🔍
06/03/2015 +0 days 🔍
06/04/2015 +1 days 🔍
05/20/2022 +2541 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: XSA-130
Researcher: Jan Beulich
Organization: SuSE
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-4105 (🔍)
GCVE (CVE): GCVE-0-2015-4105
GCVE (VulDB): GCVE-100-75682

OVAL: 🔍

X-Force: 103545 - Xen MSI-X denial of service
SecurityFocus: 74948 - Xen CVE-2015-4105 Local Denial of Service Vulnerability
SecurityTracker: 1032465 - Xen PCI MSI-X Interrupt Management Logging Bug Lets Local Guest Users Deny Service
Vulnerability Center: 50374 - Xen 3.3.x through 4.5.x Local DoS Related to PCI MSI-X Pass-Through Error Messages, Medium

See also: 🔍

Entryinfo

Created: 06/03/2015 11:03
Updated: 05/20/2022 01:46
Changes: 06/03/2015 11:03 (78), 06/29/2017 18:15 (6), 05/20/2022 01:46 (3)
Complete: 🔍
Cache ID: 216:EDF:103

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