CVE-2023-28112
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.58%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 0.58% probability · 46th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-918
- Affected
- discourse/discourse
- Source
- security-advisories@github.com
References
- https://github.com/discourse/discourse/commit/39c2f63b35d90ebaf67b9604cf1d424e5984203cPatch
- https://github.com/discourse/discourse/pull/20710Patch
- https://github.com/discourse/discourse/security/advisories/GHSA-9897-x229-55ghVendor Advisory
- https://github.com/discourse/discourse/commit/39c2f63b35d90ebaf67b9604cf1d424e5984203cPatch
- https://github.com/discourse/discourse/pull/20710Patch
- https://github.com/discourse/discourse/security/advisories/GHSA-9897-x229-55ghVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.