CVE-2021-41163: RCE via malicious SNS subscription payload
First published: Wed Oct 20 2021(Updated: )
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 subscribe_url 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.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Discourse | <2.7.9 | |
| Discourse | =2.8.0-beta1 | |
| Discourse | =2.8.0-beta2 | |
| Discourse | =2.8.0-beta3 | |
| Discourse | =2.8.0-beta4 | |
| Discourse | =2.8.0-beta5 | |
| Discourse | =2.8.0-beta6 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
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.
- agent/references
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/remedy
- agent/severity
- agent/title
- agent/weakness
- agent/first-publish-date
- agent/description
- agent/last-modified-date
- agent/author
- agent/softwarecombine
- agent/event
- agent/source
- agent/tags
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/nvd-index
- vendor/discourse
- canonical/discourse
- version/discourse/2.8.0-beta1
- version/discourse/2.8.0-beta2
- version/discourse/2.8.0-beta3
- version/discourse/2.8.0-beta4
- version/discourse/2.8.0-beta5
- version/discourse/2.8.0-beta6