MatrixSSL up to 3.8.5 X.509 Certificate out-of-bounds

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in MatrixSSL up to 3.8.5. The impacted element is an unknown function of the component X.509 Certificate Handler. This manipulation causes out-of-bounds. This vulnerability is tracked as CVE-2016-6891. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in MatrixSSL up to 3.8.5. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component X.509 Certificate Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability. The summary by CVE is:

MatrixSSL before 3.8.6 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted ASN.1 Bit Field primitive in an X.509 certificate.

The bug was discovered 10/11/2016. The weakness was disclosed 01/05/2017 by Craig Young with Tripwire (Website). It is possible to read the advisory at securityfocus.com. This vulnerability is known as CVE-2016-6891 since 08/19/2016. 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 vulnerability was handled as a non-public zero-day exploit for at least 86 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38643 (MatrixSSL Prior to 3.8.6 Multiple Vulnerabilities).

Upgrading to version 3.8.6 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 93498†). The entries VDB-95046 and VDB-95048 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
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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OpenVAS ID: 61602
OpenVAS Name: MatrixSSL Multiple Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: MatrixSSL 3.8.6

Timelineinfo

08/19/2016 🔍
10/10/2016 +52 days 🔍
10/11/2016 +1 days 🔍
01/05/2017 +86 days 🔍
01/05/2017 +0 days 🔍
01/06/2017 +1 days 🔍
11/12/2024 +2867 days 🔍

Sourcesinfo

Product: github.com

Advisory: securityfocus.com⛔
Researcher: Craig Young
Organization: Tripwire
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-6891 (🔍)
GCVE (CVE): GCVE-0-2016-6891
GCVE (VulDB): GCVE-100-95047
CERT: 🔍
SecurityFocus: 93498 - MatrixSSL VU#396440 Heap Based Buffer Overflow and Multiple Denial of Service Vulnerabilities
OSVDB: - CVE-2016-6891 - MatrixSSL - Out-of-Bounds Read Issue

See also: 🔍

Entryinfo

Created: 01/06/2017 09:28
Updated: 11/12/2024 03:47
Changes: 01/06/2017 09:28 (66), 07/14/2020 18:27 (8), 11/12/2024 03:47 (20)
Complete: 🔍
Cache ID: 216:33D:103

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

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