Vulnerability identifier: #VU72338

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FastAPI
Web applications / CMS

Vendor: FastAPI Project

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources when handling multiple small multipart fields/files. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FastAPI: 0.1.11 - 0.91.0

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External links
http://github.com/tiangolo/fastapi/releases/tag/0.92.0
http://github.com/AUTOMATIC1111/stable-diffusion-webui/issues/7856
http://github.com/tiangolo/fastapi/pull/5996

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.