Vulnerability Name:

CVE-2016-6882 (CCN-123283)

Assigned:2016-08-19
Published:2017-03-03
Updated:2017-12-15
Summary:MatrixSSL before 3.8.7, when the DHE_RSA based cipher suite is supported, makes it easier for remote attackers to obtain RSA private key information by conducting a Lenstra side-channel attack.
CVSS v3 Severity:5.9 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
5.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
4.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N)
4.3 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
6.8 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-320
CWE-200
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2016-6882

Source: MLIST
Type: Mailing List, Patch
[oss-security] 20160819 Re: CVE request: MatrixSSL lack of RSA-CRT hardening

Source: CCN
Type: oss-sec Mailing List, Fri, 19 Aug 2016 09:48:16 -0400 (EDT)
Re: CVE request: MatrixSSL lack of RSA-CRT hardening

Source: BID
Type: UNKNOWN
91488

Source: CCN
Type: BID-91488
MatrixSSL Multiple Information Disclosure Vulnerabilities

Source: MISC
Type: Third Party Advisory
https://access.redhat.com/blogs/766093/posts/1976703

Source: XF
Type: UNKNOWN
matrixssl-cve20166882-info-disc(123283)

Source: CONFIRM
Type: Patch, Release Notes
https://github.com/matrixssl/matrixssl/blob/master/CHANGES.md#validation-of-rsa-signature-creation

Source: CCN
Type: MatrixSSL GIT Repository
MatrixSSL

Source: MISC
Type: Technical Description
https://people.redhat.com/~fweimer/rsa-crt-leaks.pdf

Vulnerable Configuration:Configuration 1:
  • cpe:/a:matrixssl:matrixssl:*:*:*:*:*:*:*:* (Version <= 3.8.6)

    • Configuration CCN 1:
  • cpe:/a:matrixssl:matrixssl:3.8.6:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.precise:def:20166882000
    V
    		CVE-2016-6882 on Ubuntu 12.04 LTS (precise) - medium.
    2017-03-03
    oval:com.ubuntu.trusty:def:20166882000
    V
    		CVE-2016-6882 on Ubuntu 14.04 LTS (trusty) - medium.
    2017-03-03
    BACK
    matrixssl matrixssl *
    matrixssl matrixssl 3.8.6