Nagios Support Forum

Can I know what is the difference or changes made to nrpe 4.0.2 from nrpe 3.2.1?
Cant seem to find this info.

Thanks in advance.

Hi rajasegar,
Here's the changelog of NRPE:
https://github.com/NagiosEnterprises/nr ... ANGELOG.md


NRPE Changelog
4.0.3 - 2020-04-28
FIXES

• Fixed nasty_metachars not being read from config file (#235) (Sebastian Wolf)

4.0.2 - 2020-03-11
FIXES

• Fixed buffer length calculations/writing past memory boundaries on some systems (#227, #228) (Andreas Baumann, hariwe, Sebastian Wolf)
  Fixed use of uninitialized variable when validating requests (#229) (hariwe, Sebastian Wolf)

4.0.1 - 2020-01-22
FIXES

• Fixed syslog flooding with CRC-checking errors when both plugin and agent were updated to version 4 (Sebastian Wolf)

4.0.0 - 2019-01-13
Note: This update includes security fixes which affect both the check_nrpe plugin and the NRPE daemon. The latest version of NRPE is still able to interoperate with previous versions, but for best results, both programs should be updated.

ENHANCEMENTS

• Added TLSv1.3 and TLSv1.3+ support for systems that have it (Nigel Yong, Rahul Golam)
  Added IPv6 ip address to list of default allow_from hosts (Troy Lea)
  Added -D option to disable logging to syslog (Tom Griep, Sebastian Wolf)
  Added -3 option to force check_nrpe to use NRPE v3 packets
  OpenRC: provide a default path for nrpe.cfg (Michael Orlitzky)
  OpenRC: Use RC_SVCNAME over a hard-coded PID file (j-licht)

FIXES

• Checks for '!' now only occur inside the command buffer (Joni Eskelinen)
  NRPE daemon is more resilient to DOS attacks (Leonid Vasiliev)
  allowed_hosts will no longer test getaddrinfo records against the wrong protocol (dombenson)
  nasty_metachars will now handle C escape sequences properly when specified in the config file (Sebastian Wolf)
  Calculated packet sizes now struct padding/alignment when sending and receiving messages (Sebastian Wolf)
  Buffer sizes are now checked before use in packet size calculation (Sebastian Wolf)
  When using include_dir, individual files' errors do not prevent the remaining files from being read (Sebastian Wolf)

3.2.1 - 2017-08-31
FIXES

• Change seteuid error messages to warning/debug (Bryan Heden)
  Fix segfault when no nrpe_user is specified (Stephen Smoogen, Bryan Heden)
  Added additional strings to error messages to remove duplicates (Bryan Heden)
  Fix nrpe.spec for rpmbuild (Bryan Heden)
  Fix error for drop_privileges when using inetd (xalasys-luc, Bryan Heden)

Regards,
Vinh

Thanks. Please close the thread.

Will do ....

Regards,
Vinh