CVE-2023-0465
Description
Applications that use a non-default option when verifying certificates may be vulnerable to an attack from a malicious CA to circumvent certain checks. Invalid certificate policies in leaf certificates are silently ignored by OpenSSL and other certificate policy checks are skipped for that certificate. A malicious CA could use this to deliberately assert invalid certificate policies in order to circumvent policy checking on the certificate altogether. Policy processing is disabled by default but can be enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function.
How to fix CVE-2023-0465
To remediate CVE-2023-0465, upgrade the affected package to a fixed version below.
- —upgrade to 1.1.1t-r2 or later
- —upgrade to 3.0.8-r2 or later
- —upgrade to 1.1.1n-0+deb11u5 or later
Is CVE-2023-0465 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1.1.1t-r2
- from 0, < 3.0.8-r2
- from 0, < 1.1.1n-0+deb11u5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |