CVE-2022-32148

Public Exploit

Exposure of client IP addresses in net/http

Description

Improper exposure of client IP addresses in net/http before Go 1.17.12 and Go 1.18.4 can be triggered by calling httputil.ReverseProxy.ServeHTTP with a Request.Header map containing a nil value for the X-Forwarded-For header, which causes ReverseProxy to set the client IP as the value of the X-Forwarded-For header.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.05%

Vendor Advisory go.dev

Affected: Go standard library net/http

References

Link	Tags
https://go.dev/cl/412857	patch
https://go.googlesource.com/go/+/b2cc0fecc2ccd80e6d5d16542cc684f97b3a9c8a	mailing list patch
https://go.dev/issue/53423	issue tracking exploit third party advisory
https://groups.google.com/g/golang-announce/c/nqrv9fbR0zE	mailing list release notes
https://pkg.go.dev/vuln/GO-2022-0520	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-32148?: CVE-2022-32148 has been scored as a medium severity vulnerability.
How to fix CVE-2022-32148?: To fix CVE-2022-32148, 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-2022-32148 being actively exploited in the wild?: It is possible that CVE-2022-32148 is being exploited or will be exploited in a near future based on public information. 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-2022-32148?: CVE-2022-32148 affects Go standard library net/http.

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