Vulnerability Description
If an X.509 certificate contains a malformed policy constraint and policy processing is enabled, then a write lock will be taken twice recursively. On some operating systems (most widely: Windows) this results in a denial of service when the affected process hangs. Policy processing being enabled on a publicly facing server is not considered to be a common setup. Policy processing is enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function. Update (31 March 2023): The description of the policy processing enablement was corrected based on CVE-2023-0466.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openssl | Openssl | >= 3.0.0, <= 3.0.7 |
Related Weaknesses (CWE)
References
- https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638PatchThird Party Advisory
- https://www.openssl.org/news/secadv/20221213.txtVendor Advisory
- https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638PatchThird Party Advisory
- https://security.netapp.com/advisory/ntap-20230203-0003/
- https://www.openssl.org/news/secadv/20221213.txtVendor Advisory
FAQ
What is CVE-2022-3996?
CVE-2022-3996 is a vulnerability with a CVSS score of 7.5 (HIGH). If an X.509 certificate contains a malformed policy constraint and policy processing is enabled, then a write lock will be taken twice recursively. On some operating systems (most widely: Windows) th...
How severe is CVE-2022-3996?
CVE-2022-3996 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-3996?
Check the references section above for vendor advisories and patch information. Affected products include: Openssl Openssl.