CVE-2023-35784
CRITICALCVSS 9.8/10EPSS 0.95%
Last modified
CVE-2023-35784 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x before 3.7.3. NOTE: OpenSSL is not affected.. EPSS estimates a 0.95% chance of exploitation in the next 30 days.
Description
A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x before 3.7.3. NOTE: OpenSSL is not affected.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openbsd | Libressl | < 3.6.3 |
| Openbsd | Libressl | >= 3.7.0, < 3.7.3 |
| Openbsd | Openbsd | 7.2 |
| Openbsd | Openbsd | 7.3 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-35784?
A double free or use after free could occur after SSL_clear in OpenBSD 7.2 before errata 026 and 7.3 before errata 004, and in LibreSSL before 3.6.3 and 3.7.x before 3.7.3. NOTE: OpenSSL is not affected.
How severe is CVE-2023-35784?
CVE-2023-35784 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.95% probability of exploitation in the next 30 days.
How do I fix CVE-2023-35784?
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-2023-35784?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST