Origin validation error in Graylog - CVE-2023-41045
Published: July 5, 2023 / Updated: June 25, 2026
Vulnerability identifier: #VU135309
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2023-41045
CWE-ID: CWE-346
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Graylog
Affected software:
Graylog
Graylog
Detailed vulnerability description
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.
How to mitigate CVE-2023-41045
Install security update from vendor's website.