Vulnerability Name:

CVE-2016-6891 (CCN-117708)

Assigned:2016-10-11
Published:2016-10-11
Updated:2017-01-06
Summary: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.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-125
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2016-6891

Source: CCN
Type: US-CERT VU#396440
MatrixSSL contains multiple vulnerabilities

Source: CCN
Type: MatrixSSL Web Site
MatrixSSL 3.8.6

Source: BID
Type: Third Party Advisory, VDB Entry
93498

Source: MISC
Type: Technical Description, Third Party Advisory
http://www.tripwire.com/state-of-security/security-data-protection/cyber-security/flawed-matrixssl-code-highlights-need-for-better-iot-update-practices/

Source: XF
Type: UNKNOWN
matrixssl-cve20166891-dos(117708)

Source: CONFIRM
Type: Patch, Release Notes, Third Party Advisory
https://github.com/matrixssl/matrixssl/blob/3-8-6-open/CHANGES.md

Source: CERT-VN
Type: Third Party Advisory, US Government Resource
VU#396440

Vulnerable Configuration:Configuration 1:
  • cpe:/a:matrixssl:matrixssl:*:*:*:*:*:*:*:* (Version <= 3.8.5)

    • Configuration CCN 1:
  • cpe:/a:matrixssl:matrixssl:3.8.5:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.precise:def:20166891000
    V
    		CVE-2016-6891 on Ubuntu 12.04 LTS (precise) - medium.
    2017-01-05
    oval:com.ubuntu.trusty:def:20166891000
    V
    		CVE-2016-6891 on Ubuntu 14.04 LTS (trusty) - medium.
    2017-01-05
    BACK
    matrixssl matrixssl *
    matrixssl matrixssl 3.8.5