XenSource Xen 4.4 Hypercall HYPERVISOR_physdev_op/HYPERVISOR_hvm_op 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 identified as problematic has been detected in XenSource Xen 4.4. This affects the function HYPERVISOR_physdev_op/HYPERVISOR_hvm_op of the component Hypercall Handler. This manipulation causes resource management. This vulnerability is registered as CVE-2015-7813. No exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in XenSource Xen 4.4 (Virtualization Software). It has been declared as problematic. Affected by this vulnerability is the function HYPERVISOR_physdev_op/HYPERVISOR_hvm_op of the component Hypercall 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.

The weakness was published 10/29/2015 by Julien Grall with Citrix as XSA-146 as confirmed security advisory (Website). It is possible to read the advisory at xenbits.xen.org. This vulnerability is known as CVE-2015-7813 since 10/14/2015. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 87288 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175577 (Debian Security Update for xen (DSA 3414-1)).

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 X-Force (107665), Tenable (87288), SecurityFocus (BID 77360†) and Vulnerability Center (SBV-54042†). Similar entries are available at VDB-75144, VDB-77520, VDB-78954 and VDB-78956. Several companies clearly confirm that VulDB is the primary source for best 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: 🔍
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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: 87288
Nessus File: 🔍
Nessus Risk: 🔍

OpenVAS ID: 703414
OpenVAS Name: Debian Security Advisory DSA 3414-1 (xen - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Timelineinfo

10/14/2015 🔍
10/29/2015 +15 days 🔍
10/29/2015 +0 days 🔍
10/29/2015 +0 days 🔍
10/29/2015 +0 days 🔍
10/30/2015 +1 days 🔍
10/30/2015 +0 days 🔍
10/30/2015 +0 days 🔍
06/25/2022 +2430 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: XSA-146
Researcher: Julien Grall
Organization: Citrix
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-7813 (🔍)
GCVE (CVE): GCVE-0-2015-7813
GCVE (VulDB): GCVE-100-78955

OVAL: 🔍

X-Force: 107665 - Xen hypercall denial of service
SecurityFocus: 77360 - Xen CVE-2015-7813 Denial of Service Vulnerability
SecurityTracker: 1034029
Vulnerability Center: 54042 - Xen on ARM Remote DoS via HYPERVISOR_hvm_op hypercall, Medium

See also: 🔍

Entryinfo

Created: 10/30/2015 09:37
Updated: 06/25/2022 14:06
Changes: 10/30/2015 09:37 (71), 03/02/2018 09:35 (6), 06/25/2022 14:00 (4), 06/25/2022 14:06 (1)
Complete: 🔍
Cache ID: 216:D08:103

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