Description
Crabbox prior to v0.12.0 contains a privilege escalation vulnerability that allows users with shared visibility-only access to obtain Code, WebVNC, and Egress agent tickets by sending POST requests to ticket endpoints. Attackers can exploit insufficient access control checks on the /v1/leases/:id/code/ticket, /v1/leases/:id/webvnc/ticket, and /v1/leases/:id/egress/ticket endpoints to obtain bridge-agent tickets and impersonate trusted lease-side bridges despite having only visibility permissions.
CVSS breakdown
CVSS 4.0
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality (Vulnerable System)
High
Integrity (Vulnerable System)
High
Availability (Vulnerable System)
None
Confidentiality (Subsequent System)
None
Integrity (Subsequent System)
None
Availability (Subsequent System)
None
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected products
- openclaw / crabbox0 – 0.12.0
- openclaw / crabbox95cb30dc7dbaa1fef690a42ef6ac1cb6e307a191 – 95cb30dc7dbaa1fef690a42ef6ac1cb6e307a191
References
- PATCHhttps://github.com/openclaw/crabbox/releases/tag/v0.12.0
- PATCHhttps://github.com/openclaw/crabbox/pull/71
- PATCHhttps://github.com/openclaw/crabbox/commit/95cb30dc7dbaa1fef690a42ef6ac1cb6e307a191
- VENDOR_ADVISORYhttps://www.vulncheck.com/advisories/crabbox-privilege-escalation-via-agent-ticket-endpoints