id: GO-2021-0142
modules:
    - module: std
      versions:
        - fixed: 1.13.15
        - introduced: 1.14.0-0
          fixed: 1.14.7
      vulnerable_at: 1.14.6
      packages:
        - package: encoding/binary
          symbols:
            - ReadUvarint
            - ReadVarint
summary: Unbounded read from invalid inputs in encoding/binary
description: |-
    ReadUvarint and ReadVarint can read an unlimited number of bytes from invalid
    inputs.

    Certain invalid inputs to ReadUvarint or ReadVarint can cause these functions to
    read an unlimited number of bytes from the ByteReader parameter before returning
    an error. This can lead to processing more input than expected when the caller
    is reading directly from a network and depends on ReadUvarint or ReadVarint only
    consuming a small, bounded number of bytes, even from invalid inputs.
published: 2022-07-01T20:11:09Z
cves:
    - CVE-2020-16845
ghsas:
    - GHSA-q6gq-997w-f55g
credits:
    - Diederik Loerakker
    - Jonny Rhea
    - Raúl Kripalani
    - Preston Van Loon
references:
    - fix: https://go.dev/cl/247120
    - fix: https://go.googlesource.com/go/+/027d7241ce050d197e7fabea3d541ffbe3487258
    - report: https://go.dev/issue/40618
    - web: https://groups.google.com/g/golang-announce/c/NyPIaucMgXo