Vulnerability · Published Jul 14, 2021 · Assigned by mitre
CVE-2021-24116
Medium 4.9
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 1.2% (higher than 68% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)4.9Medium
Exploit odds (30 days)1.2%top 31.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In wolfSSL through 4.6.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | wolfssl | 4.6.0-1 | DEBIAN-CVE-2021-24116 |
| Debian:13 | wolfssl | 4.6.0-1 | DEBIAN-CVE-2021-24116 |
| Ubuntu:22.04:LTS | wolfssl | no fix listed | UBUNTU-CVE-2021-24116 |
| Ubuntu:24.04:LTS | wolfssl | no fix listed | UBUNTU-CVE-2021-24116 |
| Ubuntu:25.10 | wolfssl | no fix listed | UBUNTU-CVE-2021-24116 |
| Ubuntu:26.04:LTS | wolfssl | no fix listed | UBUNTU-CVE-2021-24116 |
| Ubuntu:26.10 | wolfssl | no fix listed | UBUNTU-CVE-2021-24116 |
Affected products (as reported)
References
- https://github.com/wolfSSL/wolfssl/releases x_refsource_CONFIRM
- https://github.com/UzL-ITS/util-lookup/blob/main/cve-vulnerability-publication.md x_refsource_MISC