CVE-2024-3095 SSRF in Langchain Web Research Retriever in langchain-ai/langchain

2024-06-0618:28:56

CWE-918

@huntr_ai

github.com

ssrf

vulnerability

langchain-ai/langchain

web retriever

local addresses

port scans

cloud environments

proxy

web attacks

confidentiality

integrity

availability

4.8 Medium

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

7.5 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.1%

JSON

A Server-Side Request Forgery (SSRF) vulnerability exists in the Web Research Retriever component of langchain-ai/langchain version 0.1.5. 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.

CNA Affected

[
  {
    "vendor": "langchain-ai",
    "product": "langchain-ai/langchain",
    "versions": [
      {
        "version": "unspecified",
        "status": "affected",
        "versionType": "custom",
        "lessThanOrEqual": "latest"
      }
    ]
  }
]