What’s Vulnerable › Vulnerabilities
CVE-2023-32726: Possible buffer overread from reading DNS responses
- Severity: high (CVSS 8.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.7% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2023-12-18 · updated 2026-06-17
- Weakness: CWE-754
Description
The vulnerability is caused by improper check for check if RDLENGTH does not overflow the buffer in response from DNS server.
Affected products
- Zabbix-Agent: from 5.0.0 through 5.0.39; from 6.0.0 through 6.0.23; from 6.4.0 through 6.4.8; 7.0.0-alpha1, 7.0.0-alpha6
References
- https://lists.debian.org/debian-lts-announce/2024/01/msg00012.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BYSYLA7VTHR25CBLYO5ZLEJFGU7HTHQB/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UMFKNV5E4LG2DIZNPRWQ2ENH75H6UEQT/
- https://support.zabbix.com/browse/ZBX-23855
- https://lists.debian.org/debian-lts-announce/2024/01/msg00012.html
- https://lists.debian.org/debian-lts-announce/2024/10/msg00000.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BYSYLA7VTHR25CBLYO5ZLEJFGU7HTHQB/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UMFKNV5E4LG2DIZNPRWQ2ENH75H6UEQT/
- https://support.zabbix.com/browse/ZBX-23855
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