CVE-2022-3620 | Exim DMARC dmarc.c dmarc_dns_lookup use after free (EUVD-2022-42980 / Nessus ID 211164)

A vulnerability classified as problematic was found in Exim. This vulnerability affects the function dmarc_dns_lookup of the file dmarc.c of the component DMARC Handler. Executing a manipulation can lead to use after free.

This vulnerability appears as CVE-2022-3620. The attack may be performed from remote. There is no available exploit.

It is best practice to apply a patch to resolve this issue.