CVE-2023-42117: (0Day) Exim Improper Neutralization of Special Elements Remote Code Execution Vulnerability
[Exim Improper Neutralization of Special Elements Remote Code Execution Vulnerability]
Other sources
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.
— MITRE
Affected Software
Event History
Frequently Asked Questions
What is CVE-2023-42117?
CVE-2023-42117 is an Exim vulnerability that allows remote attackers to execute arbitrary code on affected installations of Exim.
What is the severity of CVE-2023-42117?
The severity of CVE-2023-42117 is high, with a CVSS score of 8.1.
How does CVE-2023-42117 affect affected installations of Exim?
CVE-2023-42117 affects Exim installations by allowing remote attackers to execute arbitrary code.
Is authentication required to exploit CVE-2023-42117?
No, authentication is not required to exploit CVE-2023-42117.
How can I fix CVE-2023-42117?
To fix CVE-2023-42117, update Exim to version 4.96.2 or apply the recommended patches provided by the vendor.