CVE-2024-2965: Langchain community Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-3hjh-jh2h-vrg6
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CVSS 4.2
CWE-400 CWE-674
Published
Advisory Summary

CVE-2024-2965 is a MODERATE (CVSS 4.2) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Langchain community libraries in the PyPI ecosystem. The issue involves denial of service in langchain-community. Remediation is available by upgrading affected packages to version 0.2.5.

CVE-2024-2965 at a Glance

CVE Identifier CVE-2024-2965
GHSA Identifier GHSA-3hjh-jh2h-vrg6
Severity MODERATE
CVSS v3.1 Base Score 4.2
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Langchain community
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 4.2

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

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

How to Fix CVE-2024-2965

To remediate this vulnerability, upgrade all affected Langchain community 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-community fixed: 0.2.5 
pip install langchain-community>=0.2.5
langchain fixed: 0.2.5 
pip install langchain>=0.2.5
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-community

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-2965, inspect your installed packages using pip:

pip show langchain-community

Analyze the terminal output to locate any version of Langchain community in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.2.5), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Langchain community, 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

Denial of service in `SitemapLoader` Document Loader in the `langchain-community` package, affecting versions below 0.2.5. The `parse_sitemap` method, responsible for parsing sitemaps and extracting URLs, lacks a mechanism to prevent infinite recursion when a sitemap URL refers to the current sitemap itself. This oversight allows for the possibility of an infinite loop, leading to a crash by exceeding the maximum recursion depth in Python. This vulnerability can be exploited to occupy server socket/port resources and crash the Python process, impacting the availability of services relying on this functionality.

CVE-2024-2965 Affected Langchain community Versions

2 component(s)
Fixed Versions:
0.2.5
Product / Package Ecosystem Affected Versions Fixed Version
langchain-community
pypi/langchain-community
PyPI
< 0.2.5
0.2.5
langchain
pypi/langchain
PyPI
< 0.2.5
0.2.5

References

NVD — CVE-2024-2965 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-2965
Langchain community Source Repository REPOSITORY
https://github.com/langchain-ai/langchain/pull/22903
Security Fix Commit FIX COMMIT
https://github.com/langchain-ai/langchain/commit/73c42306745b0831aa6fe7fe4eeb70d2c2d87a82
Security Fix Commit FIX COMMIT
https://github.com/langchain-ai/langchain/commit/9a877c7adbd06f90a2518152f65b562bd90487cc
Langchain community Source Repository REPOSITORY
https://github.com/langchain-ai/langchain
Langchain community Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/langchain/PYSEC-2024-118.yaml
huntr.com/bounties/90b0776d-9... WEB
https://huntr.com/bounties/90b0776d-9fa6-4841-aac4-09fde5918cae

Frequently Asked Questions

What is CVE-2024-2965?
CVE-2024-2965 is a security vulnerability in Langchain community involving Denial of service in langchain-community under CWE-400: Uncontrolled Resource Consumption.
Which Langchain community versions are affected?
Affected versions include releases prior to 0.2.5 across affected packages: langchain-community, langchain.
What version fixes CVE-2024-2965?
Upgrading to 0.2.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is langchain-community affected?
Yes, langchain-community is affected in releases prior to 0.2.5. Upgrade your dependency to 0.2.5 or later.
Is langchain affected?
Yes, langchain is affected in releases prior to 0.2.5. Upgrade your dependency to 0.2.5 or later.
What is the CVSS score of CVE-2024-2965?
CVE-2024-2965 has a CVSS v3.1 base score of 4.2 (MODERATE) with vector string CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2024-2965?
CVE-2024-2965 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check PyPI dependencies for CVE-2024-2965?
Run the dependency tree command: 'pip show langchain-community'. 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-3hjh-jh2h-vrg6",
  "modified" : "2024-11-04T15:27:57Z",
  "published" : "2024-06-06T21:30:36Z",
  "aliases" : [ "CVE-2024-2965" ],
  "summary" : "Denial of service in langchain-community",
  "details" : "Denial of service in `SitemapLoader` Document Loader in the `langchain-community` package, affecting versions below 0.2.5. The `parse_sitemap` method, responsible for parsing sitemaps and extracting URLs, lacks a mechanism to prevent infinite recursion when a sitemap URL refers to the current sitemap itself. This oversight allows for the possibility of an infinite loop, leading to a crash by exceeding the maximum recursion depth in Python. This vulnerability can be exploited to occupy server socket/port resources and crash the Python process, impacting the availability of services relying on this functionality.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "langchain-community"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.2.5"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "langchain"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.2.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-2965"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/langchain-ai/langchain/pull/22903"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/langchain-ai/langchain/commit/73c42306745b0831aa6fe7fe4eeb70d2c2d87a82"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/langchain-ai/langchain/commit/9a877c7adbd06f90a2518152f65b562bd90487cc"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/langchain-ai/langchain"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/langchain/PYSEC-2024-118.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/90b0776d-9fa6-4841-aac4-09fde5918cae"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400", "CWE-674" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-06-06T22:20:20Z",
    "nvd_published_at" : "2024-06-06T19:15:55Z"
  }
}