exim4: Exim AUTH Out-Of-Bounds Write Remote Code Execution Vulnerability
CVE-2023-42115 is fixed in 6 products on 1 platform, first by exim4 4.93-13ubuntu1.8, released September 27, 2023. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| exim4 · Debian 12.15 (bookworm) | 4.96-15+deb12u2 | DEBIAN-CVE-2023-42115 | May 3, 2024 |
| exim4 · Debian 13.5 (trixie) | 4.97~RC1-2 | DEBIAN-CVE-2023-42115 | May 3, 2024 |
| exim4 · Debian 14 | 4.97~RC1-2 | DEBIAN-CVE-2023-42115 | May 3, 2024 |
| exim4 · Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.8 | exim4 4.93-13ubuntu1.8 | Sep 27, 2023 |
| exim4 · Ubuntu 22.04.1 LTS (jammy) | 4.95-4ubuntu2.3 | exim4 4.95-4ubuntu2.3 | Sep 27, 2023 |
| exim4-base · Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.8 | exim4-base 4.93-13ubuntu1.8 | Sep 27, 2023 |
| exim4-base · Ubuntu 22.04.1 LTS (jammy) | 4.95-4ubuntu2.3 | exim4-base 4.95-4ubuntu2.3 | Sep 27, 2023 |
| exim4-config · Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.8 | exim4-config 4.93-13ubuntu1.8 | Sep 27, 2023 |
| exim4-config · Ubuntu 22.04.1 LTS (jammy) | 4.95-4ubuntu2.3 | exim4-config 4.95-4ubuntu2.3 | Sep 27, 2023 |
| exim4-daemon-heavy · Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.8 | exim4-daemon-heavy 4.93-13ubuntu1.8 | Sep 27, 2023 |
| exim4-daemon-heavy · Ubuntu 22.04.1 LTS (jammy) | 4.95-4ubuntu2.3 | exim4-daemon-heavy 4.95-4ubuntu2.3 | Sep 27, 2023 |
| exim4-daemon-light · Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.8 | exim4-daemon-light 4.93-13ubuntu1.8 | Sep 27, 2023 |
| exim4-daemon-light · Ubuntu 22.04.1 LTS (jammy) | 4.95-4ubuntu2.3 | exim4-daemon-light 4.95-4ubuntu2.3 | Sep 27, 2023 |
| eximon4 · Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.8 | eximon4 4.93-13ubuntu1.8 | Sep 27, 2023 |
| eximon4 · Ubuntu 22.04.1 LTS (jammy) | 4.95-4ubuntu2.3 | eximon4 4.95-4ubuntu2.3 | Sep 27, 2023 |
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