# CVE-2023-42119: exim4: Exim dnsdb Out-Of-Bounds Read Information Disclosure Vulnerability CVE-2023-42119 is fixed in 6 products on 1 platform, first by exim4 4.90.1-1ubuntu1.10+esm2, released September 27, 2023. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2023-42119 - Priority: Routine - CVSS: 3.1 (low) - EPSS: 0.0160 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Sep 27, 2023 ## 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. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | exim4 Debian 12.15 (bookworm) | 4.96-15+deb12u3 | [DEBIAN-CVE-2023-42119](https://patchblox.com/security/data/fix/linux/debian-cve-2023-42119.md) | May 3, 2024 | | Linux | exim4 Debian 13.5 (trixie) | 4.97~RC2-2 | [DEBIAN-CVE-2023-42119](https://patchblox.com/security/data/fix/linux/debian-cve-2023-42119.md) | May 3, 2024 | | Linux | exim4 Debian 14 | 4.97~RC2-2 | [DEBIAN-CVE-2023-42119](https://patchblox.com/security/data/fix/linux/debian-cve-2023-42119.md) | May 3, 2024 | | Linux | exim4 Ubuntu 18.04.6 LTS (bionic) | 4.90.1-1ubuntu1.10+esm2 | [exim4 4.90.1-1ubuntu1.10+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-4.90.1-1ubuntu1.10-esm2.md) | Sep 27, 2023 | | Linux | exim4 Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.9 | [exim4 4.93-13ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-4.93-13ubuntu1.9.md) | Sep 27, 2023 | | Linux | exim4 Ubuntu 22.04.1 LTS (jammy) | 4.95-4ubuntu2.4 | [exim4 4.95-4ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-4.95-4ubuntu2.4.md) | Sep 27, 2023 | | Linux | exim4-base Ubuntu 18.04.6 LTS (bionic) | 4.90.1-1ubuntu1.10+esm2 | [exim4-base 4.90.1-1ubuntu1.10+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-base-4.90.1-1ubuntu1.10-esm2.md) | Sep 27, 2023 | | Linux | exim4-base Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.9 | [exim4-base 4.93-13ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-base-4.93-13ubuntu1.9.md) | Sep 27, 2023 | | Linux | exim4-base Ubuntu 22.04.1 LTS (jammy) | 4.95-4ubuntu2.4 | [exim4-base 4.95-4ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-base-4.95-4ubuntu2.4.md) | Sep 27, 2023 | | Linux | exim4-config Ubuntu 18.04.6 LTS (bionic) | 4.90.1-1ubuntu1.10+esm2 | [exim4-config 4.90.1-1ubuntu1.10+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-config-4.90.1-1ubuntu1.10-esm2.md) | Sep 27, 2023 | | Linux | exim4-config Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.9 | [exim4-config 4.93-13ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-config-4.93-13ubuntu1.9.md) | Sep 27, 2023 | | Linux | exim4-config Ubuntu 22.04.1 LTS (jammy) | 4.95-4ubuntu2.4 | [exim4-config 4.95-4ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-config-4.95-4ubuntu2.4.md) | Sep 27, 2023 | | Linux | exim4-daemon-heavy Ubuntu 18.04.6 LTS (bionic) | 4.90.1-1ubuntu1.10+esm2 | [exim4-daemon-heavy 4.90.1-1ubuntu1.10+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-daemon-heavy-4.90.1-1ubuntu1.10-esm2.md) | Sep 27, 2023 | | Linux | exim4-daemon-heavy Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.9 | [exim4-daemon-heavy 4.93-13ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-daemon-heavy-4.93-13ubuntu1.9.md) | Sep 27, 2023 | | Linux | exim4-daemon-heavy Ubuntu 22.04.1 LTS (jammy) | 4.95-4ubuntu2.4 | [exim4-daemon-heavy 4.95-4ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-daemon-heavy-4.95-4ubuntu2.4.md) | Sep 27, 2023 | | Linux | exim4-daemon-light Ubuntu 18.04.6 LTS (bionic) | 4.90.1-1ubuntu1.10+esm2 | [exim4-daemon-light 4.90.1-1ubuntu1.10+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-exim4-daemon-light-4.90.1-1ubuntu1.10-esm2.md) | Sep 27, 2023 | | Linux | exim4-daemon-light Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.9 | [exim4-daemon-light 4.93-13ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exim4-daemon-light-4.93-13ubuntu1.9.md) | Sep 27, 2023 | | Linux | exim4-daemon-light Ubuntu 22.04.1 LTS (jammy) | 4.95-4ubuntu2.4 | [exim4-daemon-light 4.95-4ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-exim4-daemon-light-4.95-4ubuntu2.4.md) | Sep 27, 2023 | | Linux | eximon4 Ubuntu 18.04.6 LTS (bionic) | 4.90.1-1ubuntu1.10+esm2 | [eximon4 4.90.1-1ubuntu1.10+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-eximon4-4.90.1-1ubuntu1.10-esm2.md) | Sep 27, 2023 | | Linux | eximon4 Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.9 | [eximon4 4.93-13ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-focal-eximon4-4.93-13ubuntu1.9.md) | Sep 27, 2023 | | Linux | eximon4 Ubuntu 22.04.1 LTS (jammy) | 4.95-4ubuntu2.4 | [eximon4 4.95-4ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-eximon4-4.95-4ubuntu2.4.md) | Sep 27, 2023 | --- Data as of 2026-11-07T18:46:35Z UTC. 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