CVE-2023-42115 Affecting exim4 package, versions <4.94.2-7+deb11u1
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Test your applications- Snyk ID SNYK-DEBIAN11-EXIM4-5923387
- published 28 Sep 2023
- disclosed 3 May 2024
Introduced: 28 Sep 2023
CVE-2023-42115 Open this link in a new tabHow to fix?
Upgrade Debian:11 exim4 to version 4.94.2-7+deb11u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream exim4 package and not the exim4 package as distributed by Debian.
See How to fix? for Debian:11 relevant fixed versions and status.
Exim AUTH Out-Of-Bounds Write 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 write past the end of a buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-17434.