LangChain Remote Code Execution Vulnerability

LangChain through 0.1.10 allows ../ directory traversal by an actor who is able to control the final part of the path parameter in a load_chain call. This bypasses the intended behavior of loading configurations only from the hwchase17/langchain-hub GitHub repository. The outcome can be disclosure of an API key for a large language model online service, or remote code execution.

What Happened

LangChain through 0.1.10 allows ../ directory traversal by an actor who is able to control the final part of the path parameter in a load_chain call. This bypasses the intended behavior of loading configurations only from the hwchase17/langchain-hub GitHub repository. The outcome can be disclosure of an API key for a large language model online service, or remote code execution.

Why This Matters

The evidence matters to defenders using LangChain because it could let an attacker run code in affected environments.

Recommended Action

Confirm whether GitHub is present in your environment and review vendor guidance for this report. Apply available patches or mitigations if your deployment matches the described conditions.

Exposure

Exposure reason: This incident does not currently match a technology in My Interests.

Exploitation status: UNKNOWN

Primary entities:

Timeline

• Incident first seen
  Mar 04, 2024 06:00

  BugSkan first recorded this incident.

• LangChain directory traversal vulnerability
  Mar 04, 2024 06:00

  GitHub Advisory Database · Vulnerability

Sources

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My Interests Match