Exim < 4.76 dkim_exim_verify_finish() DKIM-Signature Header Format String
High Nessus Plugin ID 53856
The remote mail server is potentially affected by a format string vulnerability.
Based on its response to a specially formatted mail message, the Exim mail server listening on this port appears to be affected by a format string vulnerability. The vulnerability is due to a failure in the dkim_exim_verify_finish() function to properly sanitize format string specifiers in the DKIM-Signature header. A remote attacker can exploit this by sending a specially crafted email, resulting in the execution of arbitrary code as the Exim run-time user.