CVE-2022-3996
X.509 Policy Constraints Double Locking
- State
- Published
- Severity
- 7.5 High
- Published
- Dec 13, 2022
- Updated
- Aug 3, 2024
- Reserved
- Nov 15, 2022
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
Weaknesses
- CWE-667 Improper Locking
Affected Products
| Product | Versions |
|---|---|
OpenSSLOpenSSL |
|
References
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