Auth bypass in Wolfssl
CVE-2022-42961
An issue was discovered in wolfSSL before 5.5.0. A fault injection attack on RAM via Rowhammer leads to ECDSA key disclosure. Users performing signing operations with private ECC keys, such as in server-side TLS connections, might leak faulty ECC signatures. These signatures can be processed via an advanced technique for ECDSA key recovery. (In 5.5.0 and later, WOLFSSL_CHECK_SIG_FAULTS can be used to address the vulnerability.)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (44.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
Weakness classification (CWE)
References
- github.com/wolfSSL/wolfssl/releases/tag/v5.5.0-stable (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2022-42961?
- CVE-2022-42961 is a medium-severity vulnerability in Wolfssl, classified under Improper Authorization. CVSS score: 5.3/10. Published 2022-10-15.
- How severe is CVE-2022-42961?
- Medium severity. CVSS v3 base score is 5.3 out of 10.