CVE-2016-6887

low-risk
Published 2017-01-13

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.

Do I need to act?

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0.30% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.9/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Affected Vendors

Matrixssl

References (4)

Patch http://www.matrixssl.org/blog/releases/matrixssl_3_8_4
Third Party Advisory https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more...
Patch http://www.matrixssl.org/blog/releases/matrixssl_3_8_4
Third Party Advisory https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more...
24
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal