Information disclosure in Libsunec Project
CVE-2018-12438
The Elliptic Curve Cryptography library (aka sunec or libsunec) 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
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (37.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-numb… (Technical Description, Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-12438?
- CVE-2018-12438 is a medium-severity vulnerability in Libsunec Project, classified under Information Disclosure. CVSS score: 4.9/10. Published 2018-06-15.
- How severe is CVE-2018-12438?
- Medium severity. CVSS v3 base score is 4.9 out of 10.