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Server-Side Request Forgery in langchain-community.retrievers.web_research.WebResearchRetriever

Moderate severity GitHub Reviewed Published Jun 6, 2024 to the GitHub Advisory Database • Updated Jul 24, 2024

Package

pip langchain-community (pip)

Affected versions

< 0.2.9

Patched versions

0.2.9

Description

A Server-Side Request Forgery (SSRF) vulnerability exists in the Web Research Retriever component in langchain-community (langchain-community.retrievers.web_research.WebResearchRetriever). The vulnerability arises because the Web Research Retriever does not restrict requests to remote internet addresses, allowing it to reach local addresses. This flaw enables attackers to execute port scans, access local services, and in some scenarios, read instance metadata from cloud environments. The vulnerability is particularly concerning as it can be exploited to abuse the Web Explorer server as a proxy for web attacks on third parties and interact with servers in the local network, including reading their response data. This could potentially lead to arbitrary code execution, depending on the nature of the local services. The vulnerability is limited to GET requests, as POST requests are not possible, but the impact on confidentiality, integrity, and availability is significant due to the potential for stolen credentials and state-changing interactions with internal APIs.

The patched code:

  • Requires users to opt-in
  • Suggests using a proxy to prevent requests to local addresses

References

Published by the National Vulnerability Database Jun 6, 2024
Published to the GitHub Advisory Database Jun 6, 2024
Reviewed Jun 6, 2024
Last updated Jul 24, 2024

Severity

Moderate
4.8
/ 10

CVSS base metrics

Attack vector
Physical
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
CVSS:3.0/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

Weaknesses

CVE ID

CVE-2024-3095

GHSA ID

GHSA-q25c-c977-4cmh

Credits

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