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CVSS: 7.5EPSS: 1%CPEs: 3EXPL: 0

CVE-2023-42118 – Exim libspf2 Integer Underflow Remote Code Execution Vulnerability
https://notcve.org/view.php?id=CVE-2023-42118
27 Sep 2023 — Exim libspf2 Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Exim libspf2. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of SPF macros. When parsing SPF macros, the process does not properly validate user-supplied data, which can result in an integer underflow before writing to memory. • https://www.zerodayinitiative.com/advisories/ZDI-23-1472 • CWE-191: Integer Underflow (Wrap or Wraparound) •