Vulnerability 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 Score
5.9
MEDIUM
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Matrixssl | Matrixssl | <= 3.8.6 |
Related Weaknesses (CWE)
References
- http://www.matrixssl.org/blog/releases/matrixssl_3_8_4PatchVendor Advisory
- https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-moreThird Party Advisory
- http://www.matrixssl.org/blog/releases/matrixssl_3_8_4PatchVendor Advisory
- https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-moreThird Party Advisory
FAQ
What is CVE-2016-6887?
CVE-2016-6887 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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.
How severe is CVE-2016-6887?
CVE-2016-6887 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-6887?
Check the references section above for vendor advisories and patch information. Affected products include: Matrixssl Matrixssl.