Use After Free in Matrixssl
CVE-2016-6885
The pstm_exptmod function in MatrixSSL before 3.8.4 allows remote attackers to cause a denial of service (invalid free and crash) via a base zero value for the modular exponentiation.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.013 (69.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · 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-2016-6885?
- CVE-2016-6885 is a high-severity vulnerability in Matrixssl, classified under Use After Free. CVSS score: 7.5/10. Published 2017-01-13.
- How severe is CVE-2016-6885?
- High severity. CVSS v3 base score is 7.5 out of 10.