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CVE-2022-41721

Request smuggling due to improper request handling in golang.org/x/net/http2/h2c

Published: Jan 13, 2023Updated: Apr 4, 2025 Sources: CVE List NVD GHSACWE-444
NVD MITRE
7.5CVSSHIGH
EPSS Score
1.8%
Top 24.1%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

A request smuggling attack is possible when using MaxBytesHandler. When using MaxBytesHandler, the body of an HTTP request is not fully consumed. When the server attempts to read HTTP2 frames from the connection, it will instead be reading the body of the HTTP request, which could be attacker-manipulated to represent arbitrary HTTP2 requests.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-444

Affected Products

golang.org/x/net/http2/h2cgolang.org/x/net
Library
OSS Libraries / go
h2cgolangOSS Libraries
golang.org/x/netGoOSS Libraries
golang.org/x/netoss-projectOSS Librariesaka golang.org/x/net
golangoss-projectUSOSS Libraries
gopackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://go.dev/issue/56352
go.dev
https://go.dev/cl/447396
go.dev
https://pkg.go.dev/vuln/GO-2023-1495
pkg.go.dev
and 6 more references View all →

Timeline

Published
Jan 13, 2023
Last Updated
Apr 4, 2025

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