CVE-2023-42115

Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability. This
vulnerability allows remote attackers to execute arbitrary code on affected
installations of Exim. Authentication is not required to exploit this
vulnerability. The specific flaw exists within the smtp service, which
listens on TCP port 25 by default. The issue results from the lack of
proper validation of user-supplied data, which can result in a write past
the end of a buffer. An attacker can leverage this vulnerability to execute
code in the context of the service account. Was ZDI-CAN-17434.

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