id: GO-2022-0477
modules:
    - module: std
      versions:
        - fixed: 1.17.11
        - introduced: 1.18.0-0
          fixed: 1.18.3
      vulnerable_at: 1.18.0
      packages:
        - package: crypto/rand
          goos:
            - windows
          symbols:
            - Read
summary: Indefinite hang with large buffers on Windows in crypto/rand
description: |-
    On Windows, rand.Read will hang indefinitely if passed a buffer larger than 1 <<
    32 - 1 bytes.
published: 2022-06-09T01:43:37Z
credits:
    - Davis Goodin
    - Quim Muntal of Microsoft
references:
    - fix: https://go.dev/cl/402257
    - fix: https://go.googlesource.com/go/+/bb1f4416180511231de6d17a1f2f55c82aafc863
    - report: https://go.dev/issue/52561
    - web: https://groups.google.com/g/golang-announce/c/TzIC9-t8Ytg/m/IWz5T6x7AAAJ
cve_metadata:
    id: CVE-2022-30634
    cwe: 'CWE-835: Loop with Unreachable Exit Condition (''Infinite Loop'')'
    description: |-
        Infinite loop in Read in crypto/rand before Go 1.17.11 and Go 1.18.3 on Windows
        allows attacker to cause an indefinite hang by passing a buffer larger than 1 <<
        32 - 1 bytes.