CVE-2022-31034
📋 TL;DR
CVE-2022-31034 is a vulnerability in Argo CD's OAuth2/OIDC login flows where insufficiently random values in parameters could allow attackers to potentially gain admin access. All Argo CD installations using SSO login from v0.11.0 onward are affected. The vulnerability stems from using predictable, time-based seeds in non-cryptographically-secure random number generators.
💻 Affected Systems
- Argo CD
📦 What is this software?
Argo Cd by Argoproj
Argo Cd by Argoproj
Argo Cd by Argoproj
Argo Cd by Argoproj
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains administrative access to Argo CD, potentially compromising the entire Kubernetes deployment pipeline and gaining control over cluster resources.
Likely Case
Privilege escalation allowing unauthorized access to Argo CD with elevated permissions, potentially leading to deployment manipulation.
If Mitigated
With proper network segmentation and access controls, impact would be limited to the Argo CD instance itself rather than broader infrastructure.
🎯 Exploit Status
Exploitation requires the attacker to intercept and manipulate SSO login flows, which is difficult but possible in certain network configurations.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v2.4.1, v2.3.5, v2.2.10, v2.1.16
Vendor Advisory: https://github.com/argoproj/argo-cd/security/advisories/GHSA-2m7h-86qq-fp4v
Restart Required: Yes
Instructions:
1. Identify your Argo CD version. 2. Upgrade to patched version using your deployment method (Helm, kubectl, etc.). 3. Restart Argo CD components. 4. Verify the upgrade completed successfully.
🔧 Temporary Workarounds
Disable SSO Login
allTemporarily disable OAuth2/OIDC SSO login and use basic authentication only
Modify Argo CD configuration to remove SSO providers and enable admin/user accounts with strong passwords
🧯 If You Can't Patch
- Implement strict network controls to isolate Argo CD from untrusted networks
- Enable detailed audit logging and monitor for suspicious login attempts
🔍 How to Verify
Check if Vulnerable:
Check Argo CD version and verify if using SSO login. Versions between v0.11.0 and the patched versions listed above are vulnerable.Check Version:
kubectl get pods -n argocd -l app.kubernetes.io/name=argocd-server -o jsonpath='{.items[0].spec.containers[0].image}' | grep -o 'v[0-9.]*'Verify Fix Applied:
Confirm Argo CD version is v2.4.1, v2.3.5, v2.2.10, or v2.1.16 or later. Verify SSO login still functions correctly.📡 Detection & Monitoring
Log Indicators:
- Unusual SSO login patterns
- Failed login attempts with predictable parameters
- Login attempts from unexpected sources
Network Indicators:
- Unusual traffic patterns during SSO authentication flows
- Multiple authentication requests in short timeframes
SIEM Query:
source="argocd" AND (event="login" OR event="authentication") AND status="success" | stats count by user, source_ip | where count > threshold🔗 References
- https://github.com/argoproj/argo-cd/commit/17f7f4f462bdb233e1b9b36f67099f41052d8cb0
- https://github.com/argoproj/argo-cd/security/advisories/GHSA-2m7h-86qq-fp4v
- https://github.com/argoproj/argo-cd/commit/17f7f4f462bdb233e1b9b36f67099f41052d8cb0
- https://github.com/argoproj/argo-cd/security/advisories/GHSA-2m7h-86qq-fp4v
