CVE-2021-38597 : wolfSSL before 4.8.1 incorrectly skips OCSP verification in certain situations o

wolfSSL before 4.8.1 incorrectly skips OCSP verification in certain situations of irrelevant response data that contains the NoCheck extension.

Published 2021-08-12 15:15:08

Updated 2021-08-23 14:07:04

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2021-38597

Wolfssl » Wolfssl
Versions before (<) 4.8.1
cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.20%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 57 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.3	MEDIUM	AV:N/AC:M/Au:N/C:P/I:N/A:N	8.6	2.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
5.9	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N	2.2	3.6	NIST
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: None

CWE-345 Insufficient Verification of Data Authenticity

The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

Assigned by: nvd@nist.gov (Primary)

https://github.com/wolfSSL/wolfssl/commit/f93083be72a3b3d956b52a7ec13f307a27b6e093

OCSP: improve handling of OCSP no check extension · wolfSSL/wolfssl@f93083b · GitHub
Patch;Third Party Advisory
https://www.wolfssl.com/docs/wolfssl-changelog/

wolfSSL Changelog | wolfSSL Embedded SSL/TLS Library Documentation
Release Notes;Vendor Advisory

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