CVE-2023-28112

Discourse's SSRF protection missing for some FastImage requests

Description

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.

Category

5.9
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.42%
Vendor Advisory github.com
Affected: discourse discourse
Published at:
Updated at:

References

Link Tags
https://github.com/discourse/discourse/security/advisories/GHSA-9897-x229-55gh vendor advisory
https://github.com/discourse/discourse/pull/20710 patch
https://github.com/discourse/discourse/commit/39c2f63b35d90ebaf67b9604cf1d424e5984203c patch

Frequently Asked Questions

What is the severity of CVE-2023-28112?
CVE-2023-28112 has been scored as a medium severity vulnerability.
How to fix CVE-2023-28112?
To fix CVE-2023-28112, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-28112 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-28112 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-28112?
CVE-2023-28112 affects discourse discourse.
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