Backstage is an open framework for building developer portals. Prior to 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by scaffolder action input authorization bypass. An authenticated user with access to affected Scaffolder templates could bypass configured action restrictions.
Depending on integration credentials, this could grant unauthorized access to repositories and related source-control resources. This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0.
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
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 7
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Linuxfoundation Backstage\/Plugin-Scaffolder-Backend
cpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:*
|
— |
3.3.1
|
|
Linuxfoundation Backstage\/Plugin-Scaffolder-Backend
cpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:*
|
3.4.0
|
3.4.1
|
|
Linuxfoundation Backstage\/Plugin-Scaffolder-Backend
cpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:*
|
4.0.0
|
4.0.3
|
|
Linuxfoundation Backstage\/Plugin-Scaffolder-Backend
cpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:*
|
4.0.4
|
4.1.0
|
|
Linuxfoundation Backstage
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
|
— |
1.49.6
|
|
Linuxfoundation Backstage
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
|
1.50.0
|
1.50.5
|
|
Linuxfoundation Backstage
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
|
1.51.0
|
1.54.6
|
References 7
https://github.com/backstage/backstage/security/advisories/GHSA-hmp2-4m7g-22cv
https://github.com/backstage/backstage/security/advisories/GHSA-hmp2-4m7g-22cv
https://github.com/backstage/backstage/commit/11c1384c0649b8ab26391c6a4e4f34b80…
https://github.com/backstage/backstage/commit/11c1384c0649b8ab26391c6a4e4f34b80ab0d188
https://github.com/backstage/backstage/commit/a91ed72d540e80b62a73b39bb1563ff50…
https://github.com/backstage/backstage/commit/a91ed72d540e80b62a73b39bb1563ff5018d52d1
https://github.com/backstage/backstage/commit/e307e4f487103d815e484291b3fda778a…
https://github.com/backstage/backstage/commit/e307e4f487103d815e484291b3fda778ab9983bf
https://github.com/backstage/backstage/releases/tag/v1.49.6
https://github.com/backstage/backstage/releases/tag/v1.49.6
https://github.com/backstage/backstage/releases/tag/v1.50.5
https://github.com/backstage/backstage/releases/tag/v1.50.5
https://github.com/backstage/backstage/releases/tag/v1.54.6
https://github.com/backstage/backstage/releases/tag/v1.54.6