Information disclosure in Matrixssl
CVE-2018-12439
MatrixSSL through 3.9.5 Open allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
Vulnerability class: Information Disclosure
EPSS: 0.003 (19.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Matrixssl
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2018-12439?
- CVE-2018-12439 is a medium-severity vulnerability in Matrixssl, classified under Information Disclosure. CVSS score: 4.7/10. Published 2018-06-15.
- How severe is CVE-2018-12439?
- Medium severity. CVSS v3 base score is 4.7 out of 10.