CVE-2016-6887

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.

Category

5.9
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.30%
Vendor Advisory matrixssl.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.matrixssl.org/blog/releases/matrixssl_3_8_4 patch vendor advisory
https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2016-6887?
CVE-2016-6887 has been scored as a medium severity vulnerability.
How to fix CVE-2016-6887?
To fix CVE-2016-6887, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-6887 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-6887 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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