CVE-2022-4203

A flaw was found in Open SSL. A read buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification, and requires either a CA to have signed the malicious certificate or for the application to continue certificate verification despite failure to construct a path to a trusted issuer.

Red Hat Enterprise Linux 6, 7, and 8 ships OpenSSL 1.1.1 and 1.0.2 which do not contain the incorrect code, so those are not affected by this CVE. Similarly, the versions of shim as shipped with Red Hat Enterprise Linux 8 and 9 are not affected by this issue.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.