Path Traversal Affecting langchain package, versions [,0.0.353)
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Test your applications- Snyk ID SNYK-PYTHON-LANGCHAIN-6615703
- published 16 Apr 2024
- disclosed 16 Apr 2024
- credit ninjafit
Introduced: 16 Apr 2024
CVE-2024-3571 Open this link in a new tabHow to fix?
Upgrade langchain to version 0.0.353 or higher.
Overview
langchain is a Building applications with LLMs through composability
Affected versions of this package are vulnerable to Path Traversal due to improper limitation of a pathname to a restricted directory in its LocalFileStore functionality. An attacker can leverage this vulnerability to read or write files anywhere on the filesystem, potentially leading to information disclosure or remote code execution.
Note:
The issue lies in the handling of file paths in the mset and mget methods, where user-supplied input is not adequately sanitized, allowing directory traversal sequences to reach unintended directories.
PoC
from langchain.storage import LocalFileStore
file_store = LocalFileStore("/home")
value = file_store.mget(["/etc/passwd"])
print(value)