Argo CD vulnerable to a Denial of Service via malicious jqPathExpressions in ignoreDifferences

Overview

Impact

DoS vuln via OOM using jq in ignoreDifferences.

ignoreDifferences:
    - group: apps
       kind: Deployment
       jqPathExpressions: 
	    - 'until(true == false; [.] + [1])'

Patches

A patch for this vulnerability has been released in the following Argo CD versions:

v2.10.8 v2.9.13 v2.8.17

For more information

If you have any questions or comments about this advisory:

Open an issue in the Argo CD issue tracker or discussions Join us on Slack in channel #argo-cd

Credits This vulnerability was found & reported by @crenshaw-dev (Michael Crenshaw)

The Argo team would like to thank these contributors for their responsible disclosure and constructive communications during the resolve of this issue

Affected packages

• github.com/argoproj/argo-cd/v2 >= 2.10.0, < 2.10.8
• github.com/argoproj/argo-cd/v2 >= 2.9.0, < 2.9.13
• github.com/argoproj/argo-cd/v2 < 2.8.17

Remediation

Upgrade to a patched release:

• github.com/argoproj/argo-cd/v2 2.10.8
• github.com/argoproj/argo-cd/v2 2.9.13
• github.com/argoproj/argo-cd/v2 2.8.17