Filebeat Improper Validation of Specified Index, Position, or Offset in Input (ESA-2025-32)
Improper Validation of Specified Index, Position, or Offset in Input (CWE-1285) in Filebeat Syslog parser and the Libbeat Dissect processor can allow a user to trigger a Buffer Overflow (CAPEC-100) and cause a denial of service (panic/crash) of the Filebeat process via either a malformed Syslog message or a malicious tokenizer pattern in the Dissect configuration.
Affected Versions:
- 7.x: All versions
- 8.x: All versions from 8.0.0 up to and including 8.19.8
- 9.x:
- All versions from 9.0.0 up to and including 9.1.8
- All versions from 9.2.0 up to and including 9.2.2
Solutions and Mitigations:
The issue is resolved in version 8.19.9, 9.1.9, and 9.2.3.
Severity: CVSSv3.1: 6.5 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVE ID: CVE-2025-68383