Headline
GHSA-4ff6-858j-r822: Gomatrixserverlib Server-Side Request Forgery (SSRF) on redirects and federation
Impact
Gomatrixserverlib is vulnerable to server-side request forgery, serving content from a private network it can access, under certain conditions.
Patches
c4f1e01eab0dd435709ad15463ed38a079ad6128 fixes this issue.
Workarounds
Use a local firewall to limit the network segments and hosts the service using gomatrixserverlib can access.
References
N/A
Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.