modules:
  - module: std
    versions:
      - fixed: 1.17.12
      - introduced: 1.18.0
        fixed: 1.18.4
    vulnerable_at: 1.18.3
    packages:
      - package: net/http
        symbols:
          - transferReader.parseTransferEncoding
description: |
    The HTTP/1 client accepted some invalid Transfer-Encoding headers as
    indicating a "chunked" encoding. This could potentially allow for request
    smuggling, but only if combined with an intermediate server that also
    improperly failed to reject the header as invalid.
published: 2022-07-25T17:34:18Z
credit: Zeyu Zhang (https://www.zeyu2001.com/)
references:
  - fix: https://go.dev/cl/409874
  - fix: https://go.googlesource.com/go/+/e5017a93fcde94f09836200bca55324af037ee5f
  - report: https://go.dev/issue/53188
  - fix: https://go.dev/cl/410714
  - web: https://groups.google.com/g/golang-announce/c/nqrv9fbR0zE
cve_metadata:
    id: CVE-2022-1705
    cwe: 'CWE-444: Inconsistent Interpretation of HTTP Requests (''HTTP Request Smuggling'')'
    description: |
        Acceptance of some invalid Transfer-Encoding headers in the HTTP/1 client
        in net/http before Go 1.17.12 and Go 1.18.4 allows HTTP request smuggling
        if combined with an intermediate server that also improperly fails to
        reject the header as invalid.