CVE-2024-3571: Langchain Path Traversal Vulnerability

MODERATE
Advisory Identifier: GHSA-rgp8-pm28-3759
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CVSS 6.5
CWE-22
Published
Advisory Summary

CVE-2024-3571 is a MODERATE (CVSS 6.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Langchain libraries in the PyPI ecosystem. The issue involves langchain vulnerable to path traversal. Remediation is available by upgrading affected packages to version 0.0.353.

CVE-2024-3571 at a Glance

CVE Identifier CVE-2024-3571
GHSA Identifier GHSA-rgp8-pm28-3759
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Langchain
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2024-3571

To remediate this vulnerability, upgrade all affected Langchain dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

langchain fixed: 0.0.353 
pip install langchain>=0.0.353
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show langchain

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-3571, inspect your installed packages using pip:

pip show langchain

Analyze the terminal output to locate any version of Langchain in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.0.353), your application is affected.

Note: The pip show langchain command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Langchain, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

langchain-ai/langchain is vulnerable to path traversal due to improper limitation of a pathname to a restricted directory ('Path Traversal') 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. 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.

CVE-2024-3571 Affected Langchain Versions

1 component(s)
Fixed Versions:
0.0.353
Product / Package Ecosystem Affected Versions Fixed Version
langchain
pypi/langchain
PyPI
< 0.0.353
0.0.353

References

NVD — CVE-2024-3571 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-3571
Security Fix Commit FIX COMMIT
https://github.com/langchain-ai/langchain/commit/aad3d8bd47d7f5598156ff2bdcc8f736f24a7412
Langchain Source Repository REPOSITORY
https://github.com/langchain-ai/langchain
huntr.com/bounties/2df3acdc-e... WEB
https://huntr.com/bounties/2df3acdc-ee4f-4257-bbf8-a7de3870a9d8

Frequently Asked Questions

What is CVE-2024-3571?
CVE-2024-3571 is a security vulnerability in Langchain involving langchain vulnerable to path traversal under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Langchain versions are affected?
Affected versions include releases prior to 0.0.353 across affected packages: langchain.
What version fixes CVE-2024-3571?
Upgrading to 0.0.353 (or the latest patched release for your respective branch) resolves the vulnerability.
Is langchain affected?
Yes, langchain is affected in releases prior to 0.0.353. Upgrade your dependency to 0.0.353 or later.
What is the CVSS score of CVE-2024-3571?
CVE-2024-3571 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2024-3571?
CVE-2024-3571 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check PyPI dependencies for CVE-2024-3571?
Run the dependency tree command: 'pip show langchain'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-rgp8-pm28-3759",
  "modified" : "2024-04-16T18:26:53Z",
  "published" : "2024-04-16T00:30:34Z",
  "aliases" : [ "CVE-2024-3571" ],
  "summary" : "langchain vulnerable to path traversal",
  "details" : "langchain-ai/langchain is vulnerable to path traversal due to improper limitation of a pathname to a restricted directory ('Path Traversal') 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. 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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "langchain"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.0.353"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-3571"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/langchain-ai/langchain/commit/aad3d8bd47d7f5598156ff2bdcc8f736f24a7412"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/langchain-ai/langchain"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/2df3acdc-ee4f-4257-bbf8-a7de3870a9d8"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-16T18:26:53Z",
    "nvd_published_at" : "2024-04-16T00:15:12Z"
  }
}