A bug has been discovered in the handling of DNS maps in sendmail 8.12
versions before 8.12.9. A remote attacker could exploit this issue to
cause the instance of sendmail dealing with a request to crash. We believe
that the nature of the bug would make remote exploitation of this issue
difficult if at all possible.
Red Hat Linux 8.0 and 9 include versions of sendmail vulnerable to this
issue, however this issue only affects sites that have enabled the
"enhdnsbl" feature and are therefore using DNS maps.
We will have an update available soon that has a patch to correct this issue,
An errata has been issued which should help the problem described in this bug report.
This report is therefore being closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files, please follow the link below. You may reopen
this bug report if the solution does not work for you.