CVE-2025-68383: filebeat — Fix

Description

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.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-1284 CWE-1284

Affected Products

Vendor	Product	Versions
elastic	filebeat	7.0.0 — 7.17.29
elastic	filebeat	8.0.0 — 8.19.9
elastic	filebeat	9.0.0 — 9.1.9
elastic	filebeat	9.2.0 — 9.2.3

References

Advisories & Patches

https://discuss.elastic.co/t/filebeat-8-19-9-9-1-9-and-9-2-3-security-update-esa-2025-32/384180

Frequently Asked Questions

What is CVE-2025-68383? +

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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-68383? +

CVE-2025-68383 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-68383? +

CVE-2025-68383 affects products from elastic, specifically: filebeat. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-68383? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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