#VU72886 Inconsistent interpretation of HTTP requests in Go Net - CVE-2022-41721

Vulnerability identifier: #VU72886

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-41721

CWE-ID: CWE-444

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Go Net
Web applications / Modules and components for CMS

Vendor: Go

Description

The vulnerability allows a remote attacker to perform HTTP/2 request smuggling attacks.

The vulnerability exists due to improper validation of HTTP/2 requests when using MaxBytesHandler. A remote attacker can send a specially crafted HTTP/2 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

Go Net: before 0.1.1-0.20221104162952-702349b0e862

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External links
http://go.dev/cl/447396
http://go.dev/issue/56352
http://pkg.go.dev/vuln/GO-2023-1495

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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.