CVE-2024-10907— Denial of Service (DoS) via Multipart Boundary in lm-sys/fastchat
Quick assessment
Affected
lm-sys lm-sys/fastchat
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
FastChat是LMSYS的一个用于训练、部署和评估基于大型语言模型的聊天机器人的开放平台。 FastChat v0.2.36版本存在资源管理错误漏洞，该漏洞源于服务器无法处理多部分边界末尾的过多字符，攻击者可通过发送畸形多部分请求导致资源过度消耗，从而造成拒绝服务。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2024-10907
Vulnerability Information
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Vulnerability Title
Denial of Service (DoS) via Multipart Boundary in lm-sys/fastchat
Source: CVE Program / CVE List V5
Vulnerability Description
In lm-sys/fastchat Release v0.2.36, the server fails to handle excessive characters appended to the end of multipart boundaries. This flaw can be exploited by sending malformed multipart requests with arbitrary characters at the end of the boundary. Each extra character is processed in an infinite loop, leading to excessive resource consumption and a complete denial of service (DoS) for all users. The vulnerability is unauthenticated, meaning no user login or interaction is required for an attacker to exploit this issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: CVE Program / CVE List V5
Vulnerability Title
FastChat 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FastChat是LMSYS的一个用于训练、部署和评估基于大型语言模型的聊天机器人的开放平台。 FastChat v0.2.36版本存在资源管理错误漏洞，该漏洞源于服务器无法处理多部分边界末尾的过多字符，攻击者可通过发送畸形多部分请求导致资源过度消耗，从而造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| lm-sys | lm-sys/fastchat | unspecified ~ latest | - |
|
II. Public POCs for CVE-2024-10907
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2024-10907 (1)
Same Patch Batch · lm-sys · 2025-03-20 · 5 CVEs total
| CVE-2024-12376 | Server Side Request Forgery in lm-sys/fastchat | |
| CVE-2024-11603 | Server-Side Request Forgery in lm-sys/fastchat | |
| CVE-2024-10908 | Open Redirect in lm-sys/fastchat | |
| CVE-2024-10912 | Denial of Service in lm-sys/fastchat |
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