CVE-2023-42119
Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability
- Published
- Updated
- Reserved
- Assigned by
- zdi
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| zdiCNA (assigner) | 3.0 | Low3.1 | CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVDNVD · Modified | 3.0 | Low3.1 | CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 1.6% · top 24% of all CVEs (5 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.1.
Weakness
Affected products
References (2)
- ZDI-23-1473 (opens in a new tab)x_research-advisoryx_transferred
- https://lists.debian.org/debian-lts-announce/2024/10/msg00029.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-42119)Record last updated .