CVE-2021-38597
MEDIUMCVSS 5.9/10EPSS 0.48%
Last modified
CVE-2021-38597 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. wolfSSL before 4.8.1 incorrectly skips OCSP verification in certain situations of irrelevant response data that contains the NoCheck extension.. EPSS estimates a 0.48% chance of exploitation in the next 30 days.
Description
wolfSSL before 4.8.1 incorrectly skips OCSP verification in certain situations of irrelevant response data that contains the NoCheck extension.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Wolfssl | Wolfssl | < 4.8.1 |
References
- https://github.com/wolfSSL/wolfssl/commit/f93083be72a3b3d956b52a7ec13f307a27b6e093Patch, Third Party Advisory
- https://www.wolfssl.com/docs/wolfssl-changelog/Release Notes, Vendor Advisory
- https://github.com/wolfSSL/wolfssl/commit/f93083be72a3b3d956b52a7ec13f307a27b6e093Patch, Third Party Advisory
- https://www.wolfssl.com/docs/wolfssl-changelog/Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-38597?
wolfSSL before 4.8.1 incorrectly skips OCSP verification in certain situations of irrelevant response data that contains the NoCheck extension.
How severe is CVE-2021-38597?
CVE-2021-38597 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.
How do I fix CVE-2021-38597?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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Are you affected by CVE-2021-38597?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST