The vulnerability in the implementation of the dmarc_dns_lookup function (dmarc.c) of the Exim mail server’s DMARC handler allows a hacker to gain unauthorized access to protected information.

The vulnerability of the implementation of the dmarcdnslookup function dmarc.c, which is part of the DMARC email server handler from Exim, relates to the use of memory after it is freed. Exploiting this vulnerability could allow a remote attacker to gain unauthorized access to protected informati...