LightLLM through 1.2.0 contains a remote code execution vulnerability in the Config Server's unauthenticated /visual_register WebSocket endpoint that passes the first client frame directly to pickle.loads(). Attackers can reach the Config Server port and send a malicious serialized payload with a __reduce__ method to execute arbitrary code with Config Server process privileges.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/ModelTC/LightLLM/blob/v1.2.0/lightllm/server/config_server/a…
disclosure@vulncheck.com
https://github.com/ModelTC/LightLLM/issues/1563
disclosure@vulncheck.com
https://github.com/ModelTC/lightllm
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/lightllm-through-1.2.0-unauthenticated-rem…
disclosure@vulncheck.com