Information disclosure in Wolfssl
CVE-2018-12436
wolfcrypt/src/ecc.c in wolfSSL before 3.15.1.patch 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 4.7 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (28.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-numb… (Third Party Advisory)
- www.wolfssl.com/wolfssh-and-rohnp/ (Vendor Advisory)
- github.com/wolfSSL/wolfssl/commit/9b9568d500f31f964af26ba8d01e542e1f27e5ca (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-12436?
- CVE-2018-12436 is a medium-severity vulnerability in Wolfssl, classified under Information Disclosure. CVSS score: 4.7/10. Published 2018-06-15.
- How severe is CVE-2018-12436?
- Medium severity. CVSS v3 base score is 4.7 out of 10.