Vulnerability in Wolfssl
CVE-2021-24116
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.012 (66.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.012 · change: +0.002
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/wolfSSL/wolfssl/releases (Third Party Advisory, Release Notes)
- github.com/UzL-ITS/util-lookup/blob/main/cve-vulnerability-publication.md (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2021-24116?
- CVE-2021-24116 is a medium-severity vulnerability in Wolfssl, classified under Observable Discrepancy. CVSS score: 4.9/10. Published 2021-07-14.
- How severe is CVE-2021-24116?
- Medium severity. CVSS v3 base score is 4.9 out of 10.
- Is CVE-2021-24116 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.