Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows network-adjacent attackers to disclose sensitive information 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 read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the service account. . Was ZDI-CAN-17643.
CVSS Details
- CVSS 3.0 Base Score: 3.1
- CVSS 3.0 Vector: (CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade exim | Aug 22, 2024 | May 3, 2024 |
| Debian | — | Upgrade exim4 | Jul 30, 2024 | May 3, 2024 |
| Exim | — | Upgrade Exim to version 4.96.2 | Apr 7, 2026 | May 3, 2024 |
| Gentoo Linux | — | Upgrade mail-mta/exim. | Feb 19, 2024 | Feb 18, 2024 |
| Suse | — | Upgrade eximstats-htmlUpgrade eximUpgrade eximon | Oct 19, 2023 | Oct 18, 2023 |
| Ubuntu | — | Upgrade exim4-daemon-light (Ubuntu Pro)Upgrade exim4-daemon-heavy (Ubuntu Pro)Upgrade exim4-daemon-heavyUpgrade exim4-daemon-light | Nov 2, 2023 | Oct 26, 2023 |
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