Vulnerability Description
Exim Improper Neutralization of Special Elements 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 memory corruption condition. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-17554.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Exim | Exim | < 4.96.2 |
Related Weaknesses (CWE)
References
- https://www.zerodayinitiative.com/advisories/ZDI-23-1471/Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/10/msg00029.html
- https://www.zerodayinitiative.com/advisories/ZDI-23-1471/Third Party Advisory
FAQ
What is CVE-2023-42117?
CVE-2023-42117 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Exim Improper Neutralization of Special Elements Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Exim. Authentica...
How severe is CVE-2023-42117?
CVE-2023-42117 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2023-42117?
Check the references section above for vendor advisories and patch information. Affected products include: Exim Exim.