Description
LightLLM through 1.2.0 multimodal deployments expose an unauthenticated RPyC cache service with pickle deserialization enabled on all interfaces. Attackers can send crafted serialized objects to exposed cache methods to execute arbitrary code with service privileges.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ModelTC | LightLLM | ≤ 1.2.0 | — |
References
- GitHub Issue #1596 issue-tracking
- https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/embed_cache/manager.py#L29-L31 technical-description
- https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/embed_cache/manager.py#L66 technical-description
- https://github.com/ModelTC/LightLLM product
- VulnCheck Advisory: LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Embed Cache RPyC Service third-party-advisory