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  1. ZABBIX BUGS AND ISSUES
  2. ZBX-3794

zabbix_agentd DoS attack with vfs.file.cksum

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    • Icon: Incident report Incident report
    • Resolution: Fixed
    • Icon: Major Major
    • 1.8.6, 1.9.4 (alpha)
    • None
    • Agent (G)
    • None
    • *NIX

      If you feed a checksum generator a special device i. e. /dev/urandom the CPU load jumps to 100 %. Steps to reproduce on *NIX:

      • start zabbix_agentd
      • run: echo "vfs.file.cksum[/dev/urandom]" | nc 127.0.0.1 10050
      • observe cpu load with command: top

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              Created:
              Updated:
              Resolved: