libvirt up to 1.x Password Checker Empty access control

CVSS Meta Temp Score
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability was found in libvirt up to 1.x. It has been rated as critical. Impacted is an unknown function of the component Password Checker. This manipulation causes access control (Empty). This vulnerability is registered as CVE-2016-5008. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in libvirt up to 1.x (Virtualization Software). It has been declared as very critical. Affected by this vulnerability is an unknown function of the component Password Checker. The manipulation with an unknown input leads to a access control vulnerability (Empty). The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

libvirt before 2.0.0 improperly disables password checking when the password on a VNC server is set to an empty string, which allows remote attackers to bypass authentication and establish a VNC session by connecting to the server.

The weakness was published 07/13/2016 (Website). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is known as CVE-2016-5008 since 05/24/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD at the moment (estimation calculated on 09/02/2022). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 91921 (Debian DLA-541-1 : libvirt 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 and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 256125 (CentOS Security Update for libvirt (CESA-2016:2577)).

Upgrading to version 2.0.0 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (91921) and SecurityFocus (BID 91562†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Empty
Class: Access control / Empty
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 91921
Nessus Name: Debian DLA-541-1 : libvirt security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703613
OpenVAS Name: Debian Security Advisory DSA 3613-1 (libvirt - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libvirt 2.0.0

Timelineinfo

01/18/2015 🔍
05/24/2016 +492 days 🔍
07/01/2016 +38 days 🔍
07/05/2016 +4 days 🔍
07/13/2016 +8 days 🔍
07/13/2016 +0 days 🔍
07/14/2016 +1 days 🔍
09/02/2022 +2241 days 🔍

Sourcesinfo

Advisory: RHSA-2016:2577
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-5008 (🔍)
GCVE (CVE): GCVE-0-2016-5008
GCVE (VulDB): GCVE-100-89215

OVAL: 🔍

SecurityFocus: 91562 - libvirt CVE-2016-5008 Local Security Bypass Vulnerability

Entryinfo

Created: 07/14/2016 10:47
Updated: 09/02/2022 16:28
Changes: 07/14/2016 10:47 (66), 02/24/2019 10:18 (13), 09/02/2022 16:28 (4)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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