Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper access control in backend action invocation. An authenticated user could invoke actions that an operator had excluded through action configuration.
Existing action permissions and downstream authorization remain enforced. This issue is fixed in version 0.17.8.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
backstage:backstage
@backstage:backend-defaults
References 3
https://github.com/backstage/backstage/security/advisories/GHSA-3xr5-8w6c-p5gw
https://github.com/backstage/backstage/security/advisories/GHSA-3xr5-8w6c-p5gw
https://github.com/backstage/backstage/commit/a8fb34a990a69bcb745e85a3213cf9e5b…
https://github.com/backstage/backstage/commit/a8fb34a990a69bcb745e85a3213cf9e5ba2d31a3
https://github.com/backstage/backstage/releases/tag/v1.54.6
https://github.com/backstage/backstage/releases/tag/v1.54.6