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.
CVSS Details
- CVSS 3.0 Base Score: 9.8
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade exim | Aug 22, 2024 | May 3, 2024 |
| Debian | — | Upgrade exim4 | Oct 4, 2023 | Oct 4, 2023 |
| Exim | — | Upgrade Exim to version 4.96.1 | Apr 7, 2026 | May 3, 2024 |
| Gentoo Linux | — | Upgrade mail-mta/exim. | Feb 19, 2024 | Feb 18, 2024 |
| Suse | — | Upgrade eximonUpgrade eximstats-htmlUpgrade exim | Oct 6, 2023 | Oct 5, 2023 |
| Ubuntu | — | Upgrade exim4-daemon-light (Ubuntu Pro)Upgrade exim4-daemon-lightUpgrade exim4-base (Ubuntu Pro)Upgrade exim4-baseUpgrade exim4Upgrade exim4-daemon-heavy (Ubuntu Pro)Upgrade eximon4 (Ubuntu Pro)Upgrade exim4 (Ubuntu Pro)Upgrade exim4-daemon-heavyUpgrade eximon4 | Oct 6, 2023 | Oct 4, 2023 |
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