XenSource Xen 4.4.x/4.5.x/4.6.x/4.7.x Virtio Request resource management

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in XenSource Xen 4.4.x/4.5.x/4.6.x/4.7.x. Affected is an unknown function of the component Virtio Request Handler. Such manipulation leads to resource management. This vulnerability is documented as CVE-2016-5403. The attack needs to be performed locally. There is not any exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in XenSource Xen 4.4.x/4.5.x/4.6.x/4.7.x (Virtualization Software). It has been rated as problematic. Affected by this issue is some unknown functionality of the component Virtio Request Handler. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. CVE summarizes:

The virtqueue_pop function in hw/virtio/virtio.c in QEMU allows local guest OS administrators to cause a denial of service (memory consumption and QEMU process crash) by submitting requests without waiting for completion.

The weakness was released 07/27/2016 as XSA-184 as confirmed security advisory (Website). The advisory is available at xenbits.xen.org. This vulnerability is handled as CVE-2016-5403 since 06/10/2016. The exploitation is known to be easy. The attack may be launched remotely. A simple authentication is required for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 92837 (RHEL 6 : qemu-kvm (RHSA-2016:1585)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196546 (Ubuntu Security Notification for Qemu, Qemu-kvm Vulnerabilities (USN-3047-1)).

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 (92837), SecurityFocus (BID 92148†) and SecurityTracker (ID 1036476†). Entries connected to this vulnerability are available at VDB-87712, VDB-87919, VDB-87920 and VDB-87921. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
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: 92837
Nessus Name: RHEL 6 : qemu-kvm (RHSA-2016:1585)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802385
OpenVAS Name: RedHat Update for qemu-kvm RHSA-2016:1585-01
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

06/10/2016 🔍
07/27/2016 +47 days 🔍
07/27/2016 +0 days 🔍
07/27/2016 +0 days 🔍
07/29/2016 +2 days 🔍
07/29/2016 +0 days 🔍
08/02/2016 +4 days 🔍
08/10/2016 +8 days 🔍
03/14/2019 +946 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: XSA-184
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-5403 (🔍)
GCVE (CVE): GCVE-0-2016-5403
GCVE (VulDB): GCVE-100-90386
SecurityFocus: 92148 - QEMU CVE-2016-5403 Denial of Service Vulnerability
SecurityTracker: 1036476

See also: 🔍

Entryinfo

Created: 07/29/2016 12:43
Updated: 03/14/2019 16:50
Changes: 07/29/2016 12:43 (71), 03/14/2019 16:50 (12)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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