CVE-2020-9301

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-12-11 · updated 2026-06-17
Weakness: CWE-502

Description

Nolan Ray from Apple Information Security identified a security vulnerability in Spinnaker, all versions prior to version 1.23.4, 1.22.4 or 1.21.5. The vulnerability exists within the handling of SpEL expressions that allows an attacker to read and write arbitrary files within the orca container via authenticated HTTP POST requests.

Affected products

spinnaker: before 1.21.5; from 1.22.0 before 1.22.4; from 1.23.0 before 1.23.4 — fixed in 1.21.5, 1.22.4, 1.23.4

How to fix

Upgrade to a fixed version: spinnaker 1.21.5, 1.22.4, 1.23.4. Check the vendor advisory for mitigations.

References

https://github.com/Netflix/security-bulletins/blob/master/advisories/nflx-2020-006.md
https://github.com/Netflix/security-bulletins/blob/master/advisories/nflx-2020-006.md

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