id: GO-2023-1878
modules:
    - module: std
      versions:
        - fixed: 1.19.11
        - introduced: 1.20.0-0
          fixed: 1.20.6
      vulnerable_at: 1.20.5
      packages:
        - package: net/http
          symbols:
            - Request.write
          derived_symbols:
            - Client.CloseIdleConnections
            - Client.Do
            - Client.Get
            - Client.Head
            - Client.Post
            - Client.PostForm
            - Get
            - Head
            - Post
            - PostForm
            - Request.Write
            - Request.WriteProxy
            - Transport.CancelRequest
            - Transport.CloseIdleConnections
            - Transport.RoundTrip
summary: 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.
credits:
    - Bartek Nowotarski
references:
    - report: https://go.dev/issue/60374
    - fix: https://go.dev/cl/506996
    - web: https://groups.google.com/g/golang-announce/c/2q13H6LEEx0
cve_metadata:
    id: CVE-2023-29406
    cwe: 'CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers (''HTTP Request/Response Splitting'')'
    references:
        - https://security.netapp.com/advisory/ntap-20230814-0002/
        - https://security.gentoo.org/glsa/202311-09