CVE-2023-29406

Insufficient sanitization of Host header in net/http

Description

The HTTP/1 client does not fully validate the contents of the Host header. A maliciously crafted Host header can inject additional headers or entire requests. With fix, the HTTP/1 client now refuses to send requests containing an invalid Request.Host or Request.URL.Host value.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.32%
Vendor Advisory go.dev
Affected: Go standard library net/http
Published at:
Updated at:

References

Link Tags
https://go.dev/issue/60374 patch issue tracking
https://go.dev/cl/506996 patch
https://groups.google.com/g/golang-announce/c/2q13H6LEEx0 mailing list
https://pkg.go.dev/vuln/GO-2023-1878 vendor advisory
https://security.netapp.com/advisory/ntap-20230814-0002/
https://security.gentoo.org/glsa/202311-09

Frequently Asked Questions

What is the severity of CVE-2023-29406?
CVE-2023-29406 has been scored as a medium severity vulnerability.
How to fix CVE-2023-29406?
To fix CVE-2023-29406, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-29406 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-29406 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-29406?
CVE-2023-29406 affects Go standard library net/http.
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