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.

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.

EPSS: 0.010 (60.4th percentile) — read the EPSS interpretation.

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.

Affected products

Wolfssl
N/a — versions n/a

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory, Release Notes)
cve@mitre.org (Third Party Advisory, x_refsource_MISC, 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.