CVE-2016-6887 Information

Description

The pstm_exptmod function in MatrixSSL 3.8.6 and earlier does not properly perform modular exponentiation which might allow remote attackers to predict the secret key via a CRT attack.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

http://www.matrixssl.org/blog/releases/matrixssl_3_8_4 https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.9