CVE-2017-11480

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-12-08 · updated 2026-06-17
Weakness: CWE-404

Description

Packetbeat versions prior to 5.6.4 are affected by a denial of service flaw in the PostgreSQL protocol handler. If Packetbeat is listening for PostgreSQL traffic and a user is able to send arbitrary network traffic to the monitored port, the attacker could prevent Packetbeat from properly logging other PostgreSQL traffic.

Affected products

Elastic Packetbeat: before 5.6.4 — fixed in 5.6.4

How to fix

Upgrade to a fixed version: Elastic Packetbeat 5.6.4. Check the vendor advisory for mitigations.

References

https://discuss.elastic.co/t/beats-5-6-4-security-update/106739
https://discuss.elastic.co/t/beats-5-6-4-security-update/106739

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