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[lwip-devel] [bug #60715] SNMP 2c traps use incomplete OIDs

From: Tim Schendekehl
Subject: [lwip-devel] [bug #60715] SNMP 2c traps use incomplete OIDs
Date: Tue, 1 Jun 2021 05:30:10 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:88.0) Gecko/20100101 Firefox/88.0


                 Summary: SNMP 2c traps use incomplete OIDs
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: timschendekehl
            Submitted on: Tue 01 Jun 2021 09:30:08 AM UTC
                Category: apps
                Severity: 3 - Normal
              Item Group: Faulty Behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: git head



>From RFC3416 4.2.6. "The SNMPv2-Trap-PDU":
"The first two variable bindings in the variable binding list of an
SNMPv2-Trap-PDU are sysUpTime.0 [RFC3418] and snmpTrapOID.0 [RFC3418]

The implementation in function
snmp_send_trap_or_notification_or_inform_generic of file
src/apps/snmp/snmp_traps.c is missing the last 0 of both OIDs. Instead it uses
only sysUpTime and snmpTrapOID.


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