Vulnerability · Published Oct 15, 2022 · Assigned by mitre
CVE-2022-42961
Medium 5.3
In plain English
A medium-severity security flaw in the wolfssl package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.)
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | wolfssl | 5.5.3-1 | DEBIAN-CVE-2022-42961 |
| Debian:13 | wolfssl | 5.5.3-1 | DEBIAN-CVE-2022-42961 |
| Ubuntu:22.04:LTS | wolfssl | no fix listed | UBUNTU-CVE-2022-42961 |
| Ubuntu:24.04:LTS | wolfssl | no fix listed | UBUNTU-CVE-2022-42961 |
| Ubuntu:25.10 | wolfssl | no fix listed | UBUNTU-CVE-2022-42961 |
| Ubuntu:26.04:LTS | wolfssl | no fix listed | UBUNTU-CVE-2022-42961 |
| Ubuntu:26.10 | wolfssl | no fix listed | UBUNTU-CVE-2022-42961 |
Affected products (as reported)
Weakness: CWE-285 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N