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Created attachment 1744258 [details]
test source

Created attachment 1744258 [details]
test source

Description of problem:

snmptrap which is send from specific equipment isn't logged.
According to the snmptrapd debug log, snmptrapd failed to parse snmptrap header.

    error while parsing VarBindList: (parse header length 3 too short: need 0)

Version-Release number of selected component (if applicable):
net-snmp-5.8-17.el8.x86_64

How reproducible:
Always.

Steps to Reproduce:

  1) Modify snmptrapd.conf as follows.

     # cat /etc/snmp/snmptrapd.conf
     disableAuthorization yes

  2) Compile a test program source.

     # gcc -o snmptrap snmptrap.c

  3) Execute a test program.

     # ./snmptrap

Actual results:
snmptrap is not logged by parse error.

Expected results:
snmptrap is logged

Reported to upstream. Let's wait for their answer.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (net-snmp bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:1637