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  1. ZABBIX BUGS AND ISSUES
  2. ZBX-10820

Potential loss of data when server/proxy processes zabbix_sender data

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    • Team:
      Team A
    • Sprint:
      Sprint 12, Sprint 13, Sprint 14, Sprint 15, Sprint 16
    • Story Points:
      2

      Description

      Thanks to (86) of ZBXNEXT-1263 we now save peer hostname/IP in peer field of zbx_socket_t structure and reuse when necessary.

      The only exception is zbx_tcp_check_security() calling getpeername() and inet_ntoa()/zbx_getnameinfo() independently. We should reuse peer at least and possibly think about storing getpeername() result in zbx_socket_t structure too on stage of zbx_tcp_accept().

      Suppose zabbix_sender disconnects (due to timeout or network failure) right after server/proxy performs zbx_tcp_accept(). Server/proxy will be able to read sender data but will have to reject it because of security restriction since second call of getpeername() will fail.

      Also peer in zbx_socket_t and host in zbx_get_ip_by_socket() use different in size static buffers.

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              • Assignee:
                Unassigned
                Reporter:
                glebs.ivanovskis Glebs Ivanovskis (Inactive)
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                • Created:
                  Updated:
                  Resolved: