Information disclosure in Matrixssl
CVE-2016-6887
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.012 (65.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.matrixssl.org/blog/releases/matrixssl_3_8_4 (Patch, Vendor Advisory)
- blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html (Third Party Advisory)
Frequently asked questions
- What is CVE-2016-6887?
- CVE-2016-6887 is a medium-severity vulnerability in Matrixssl, classified under Information Disclosure. CVSS score: 5.9/10. Published 2017-01-13.
- How severe is CVE-2016-6887?
- Medium severity. CVSS v3 base score is 5.9 out of 10.