CVE-2022-32148

Summary

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.

Impact & exploitability

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://go.dev/cl/412857 ↗

Additional information

• NVD record
• https://go.dev/cl/412857Patch
• https://go.googlesource.com/go/+/b2cc0fecc2ccd80e6d5d16542cc684f97b3a9c8aPatch
• https://pkg.go.dev/vuln/GO-2022-0520Advisory
• https://groups.google.com/g/golang-announce/c/nqrv9fbR0zE
• https://go.dev/issue/53423Advisory