CVE-2021-41163: RCE via malicious SNS subscription payload
Discourse is an open source platform for community discussion. In affected versions maliciously crafted requests could lead to remote code execution. This resulted from a lack of validation in subscribeurl values. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. To workaround the issue without updating, requests with a path starting /webhooks/aws path could be blocked at an upstream proxy.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2021-41163?
CVE-2021-41163 has been classified as a critical vulnerability due to its potential to enable remote code execution.
How do I fix CVE-2021-41163?
To fix CVE-2021-41163, upgrade Discourse to the latest stable version or any of the patched beta versions.
What types of Discourse versions are affected by CVE-2021-41163?
CVE-2021-41163 affects Discourse versions prior to 2.7.9 and several 2.8.0 beta versions.
What is the impact of CVE-2021-41163?
The impact of CVE-2021-41163 is that it allows attackers to execute arbitrary code on the server.
Is there a workaround for CVE-2021-41163?
There are no specific workarounds for CVE-2021-41163; upgrading to a patched version is the recommended solution.