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
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
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.
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