CVE-2023-28112: Discourse's SSRF protection missing for some FastImage requests
Discourse is an open-source discussion platform. Prior to version 3.1.0.beta3 of the beta and tests-passed branches, some user provided URLs were being passed to FastImage without SSRF protection. Insufficient protections could enable attackers to trigger outbound network connections from the Discourse server to private IP addresses. This affects any site running the tests-passed or beta branches versions 3.1.0.beta2 and prior. This issue is patched in version 3.1.0.beta3 of the beta and tests-passed branches. There are no known workarounds.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is CVE-2023-28112?
CVE-2023-28112 is a vulnerability in the Discourse discussion platform that allows attackers to trigger outbound network connections from the server.
What is the severity of CVE-2023-28112?
CVE-2023-28112 has a severity level of high with a score of 8.1.
How does CVE-2023-28112 affect Discourse?
CVE-2023-28112 affects Discourse versions up to 3.1.0.beta3 of the beta and tests-passed branches.
How can I fix CVE-2023-28112?
To fix CVE-2023-28112, users should update to version 3.1.0.beta3 or later of Discourse.
Are there any references for CVE-2023-28112?
Yes, you can find references for CVE-2023-28112 at the following links: [Link 1](https://github.com/discourse/discourse/commit/39c2f63b35d90ebaf67b9604cf1d424e5984203c), [Link 2](https://github.com/discourse/discourse/pull/20710), [Link 3](https://github.com/discourse/discourse/security/advisories/GHSA-9897-x229-55gh).