QID 50131

Date Published: 2023-10-25

QID 50131: Exim Mail Server Multiple Security Vulnerabilities

Exim is a mail transfer agent (MTA) used on Unix-like operating systems. Exim is free software and it aims to be a general and flexible mailer with extensive facilities for checking incoming e-mail.

CVE-2023-42114: Exim is vulnerable to Information Disclosure Vulnerability.
CVE-2023-42115: Exim is vulnerable to Out-Of-Bounds Write Remote Code Execution Vulnerability.
CVE-2023-42116: Exim is vulnerable to Stack-based Buffer Overflow Remote Code Execution Vulnerability.

Affected Versions:
Exim versions prior to 4.96.1

QID Detection Logic (Unauthenticated):
The QID checks for the SMTP banner to check for vulnerable versions of exim.

Successful exploitation of these vulnerabilities may allow remote attackers to disclose sensitive information or execute arbitrary code on affected installations of Exim.

  • CVSS V3 rated as Critical - 9.8 severity.
  • CVSS V2 rated as High - 7.5 severity.
    • Solution
    Customer are advised to update to Exim version 4.96.1 or 4.97 or later.

    Vendor References

    CVEs related to QID 50131

    CVE-2023-42114 | CVE-2023-42115 | CVE-2023-42116 |
    Software Advisories
    Advisory ID Software Component Link
    Exim Security Advisory URL Logo exim.org/static/doc/security/CVE-2023-zdi.txt
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