Vulnerability identifier: #VU61488

Vulnerability risk: Medium

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

CVE-ID: CVE-2022-24761

CWE-ID: CWE-444

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
waitress
Other software / Other software solutions

Vendor: Pylons Project

Description

The vulnerability allows a remote attacker to preform HTTP request smuggling attacks.

The vulnerability exists due to improper validating if the incoming HTTP request matches the RFC7230 standard. A remote attacker can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

waitress: 0.1 - 2.1.0

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External links
http://github.com/Pylons/waitress/commit/9e0b8c801e4d505c2ffc91b891af4ba48af715e0
http://github.com/Pylons/waitress/security/advisories/GHSA-4f7p-27jc-3c36
http://github.com/Pylons/waitress/releases/tag/v2.1.1

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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.