CVE-2024-3570: anythingllm XSS — Exploit & Fix

Description

A stored Cross-Site Scripting (XSS) vulnerability exists in the chat functionality of the mintplex-labs/anything-llm repository, allowing attackers to execute arbitrary JavaScript in the context of a user's session. By manipulating the ChatBot responses, an attacker can inject malicious scripts to perform actions on behalf of the user, such as creating a new admin account or changing the user's password, leading to a complete takeover of the AnythingLLM application. The vulnerability stems from the improper sanitization of user and ChatBot input, specifically through the use of `dangerouslySetInnerHTML`. Successful exploitation requires convincing an admin to add a malicious LocalAI ChatBot to their AnythingLLM instance.

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CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
mintplexlabs	anythingllm	< 1.0.0

References

Advisories & Patches

https://github.com/mintplex-labs/anything-llm/commit/a4ace56a401ffc8ce0082d7444159dfd5dc28834 https://github.com/mintplex-labs/anything-llm/commit/a4ace56a401ffc8ce0082d7444159dfd5dc28834

Exploits

https://huntr.com/bounties/f0eaf552-aaf3-42b6-a5df-cfecd2de15ee https://huntr.com/bounties/f0eaf552-aaf3-42b6-a5df-cfecd2de15ee

Frequently Asked Questions

What is CVE-2024-3570? +

A stored Cross-Site Scripting (XSS) vulnerability exists in the chat functionality of the mintplex-labs/anything-llm repository, allowing attackers to execute arbitrary JavaScript in the context of a user's session. By manipulating the ChatBot responses, an attacker can inject malicious scripts to perform actions on behalf of the user, such as creating a new admin account or changing the user's password, leading to a complete takeover of the AnythingLLM application. The vulnerability stems from the improper sanitization of user and ChatBot input, specifically through the use of `dangerouslySetInnerHTML`. Successful exploitation requires convincing an admin to add a malicious LocalAI ChatBot to their AnythingLLM instance. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2024-3570? +

CVE-2024-3570 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-3570? +

CVE-2024-3570 affects products from mintplexlabs, specifically: anythingllm. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-3570? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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