What is GHSA-v829-x6hh-cqfq?

GHSA-v829-x6hh-cqfq is a security advisory published by GitHub Security Advisories with Medium severity. Crossplane-runtime contains Improper Input Validation via Compositions

Which CVE IDs does GHSA-v829-x6hh-cqfq cover?

GHSA-v829-x6hh-cqfq covers the following CVE IDs: CVE-2023-27484. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-v829-x6hh-cqfq?

GHSA-v829-x6hh-cqfq has a CVSS v3 base score of 6.2, published by GitHub Security Advisories.

Which products are affected by GHSA-v829-x6hh-cqfq?

GHSA-v829-x6hh-cqfq affects 3 products, including: go/github.com/crossplane/crossplane:\u003c 1.9.2; go/github.com/crossplane/crossplane:\u003e= 1.10.0, \u003c 1.10.3; go/github.com/crossplane/crossplane:\u003e= 1.11.0, \u003c 1.11.2.

GHSA-v829-x6hh-cqfqMediumCVSS 6.2

Crossplane-runtime contains Improper Input Validation via Compositions

Vendor

GitHub Security Advisories

Published

March 10, 2023

Last Modified

July 13, 2023

🔗 CVE IDs covered (1)

CVE-2023-27484 →

📋 Description

Summary

Fuzz testing, by Ada Logics and sponsored by the CNCF, identified a vulnerability in the fieldpath package from crossplane/crossplane-runtime that an already highly privileged Crossplane user able to create or update Compositions could leverage to cause an out of memory panic in Crossplane.

Details

Compositions allow users to specify patches inserting elements into arrays at an arbitrary index. When a Composition is selected for a Composite Resource, patches are evaluated and if a specified index is greater than the current size of the target slice, that slice's size will be increased to the specified index, which could lead to an excessive amount of memory usage and therefore the Pod being OOM-Killed. The index is already capped to the maximum value for a uint32 (4294967295) when parsed, but that is still an unnecessarily large value.

Workaround

Users can restrict write privileges on Compositions to only admin users as a workaround.

🎯 Affected products3

go/github.com/crossplane/crossplane:< 1.9.2
go/github.com/crossplane/crossplane:>= 1.10.0, < 1.10.3
go/github.com/crossplane/crossplane:>= 1.11.0, < 1.11.2