This update for exim fixes the following issues:
* CVE-2023-42114: NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability (boo#1215784)
* CVE-2023-42115: AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability (boo#1215785)
* CVE-2023-42116: SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability (boo#1215786)