CVE-2016-6886

Description

The pstm_reverse function in MatrixSSL before 3.8.4 allows remote attackers to cause a denial of service (invalid memory read and crash) via a (1) zero value or (2) the key's modulus for the secret key during RSA key exchange.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.81% Top 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
http://www.securityfocus.com/bid/92604 vdb entry

Frequently Asked Questions

What is the severity of CVE-2016-6886?
CVE-2016-6886 has been scored as a high severity vulnerability.
How to fix CVE-2016-6886?
To fix CVE-2016-6886, 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-2016-6886 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-6886 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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