Origin validation error in Graylog - CVE-2023-41045
Published: July 5, 2023 / Updated: June 25, 2026
Vulnerability identifier: #VU135309
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-41045
CWE-ID: CWE-346
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to poison Graylog's DNS lookup cache.
The vulnerability exists due to improper source port usage in the DNS lookup functionality when sending DNS queries. A remote attacker can inject forged DNS responses to poison Graylog's DNS lookup cache.
Exploitation is described as unlikely in many setups.
Affected software
Graylog
How to mitigate CVE-2023-41045
Install security update from vendor's website.
Graylog - addressed in versions 5.0.9, 5.1.3