View Issue Details
|ID||Project||Category||View Status||Date Submitted||Last Update|
|0017653||CentOS-7||ipmitool||public||2020-08-07 18:35||2020-08-13 11:20|
|Summary||0017653: ipmitool fails to connect to modern OpenBMC due to error in cipher suite matching|
|Description||A lot of servers is using OpenBMC stack for their management controllers.|
Some time ago the OpenBMC project has dropped support for cipher suite 3 due to its insecurity.
Before that happened, the upstream ipmitool has been updated and a bug that prevented proper cipher suite negotiation has been fixed there.
However, those commits have not been imported yet to the CentOS 7 ipmitool package. That results in CentOS 7 ipmitool failing to authenticate over lanplus interface to any modern OpenBMC-driven controllers.
|Steps To Reproduce||Using ipmitool-1.8.18-7.el7.x86_64.rpm or ipmitool-1.8.18-9.el7.x86_64.rpm try to query any modern OpenBMC-driven BMC and observe an error:|
$ ipmitool -H <openbmc_ip_address> -I lanplus -U <username> -P <password> mc info
Error in open session response message : invalid authentication algorithm
Error: Unable to establish IPMI v2 / RMCP+ session
|Additional Information||OpenBMC commit that dropped cipher suite 3:|
Upstream ipmitool commits that fix the issue:
https://github.com/ipmitool/ipmitool/commit/7772254b62826b894ca629df8c597030a98f4f72 lanplus: Auto-select 'best' cipher suite available
https://github.com/ipmitool/ipmitool/commit/9452be87181a6e83cfcc768b3ed8321763db50e4 channel: Fix buffer overflow
CentOS is a rebuild of the sources used to create RHEL and aims to reproduce RHEL bug for bug and feature for feature. Please submit your request to Redhat via bugzilla.redhat.com and if/when RH accepts it and incorporates it into RHEL and releases a patched version, then CentOS will pick it up automatically. Since RHEL 7.9 is around the corner, at best the change you've requested might be implemented in RHEL 7.10 However RHEL 7 is already in maintenance mode so this change might get rejected.
For easier tracking, please crosslink this bug with the one opened at bugzilla.redhat.com.
|Thanks. Created a bug report in RedHat: https://bugzilla.redhat.com/show_bug.cgi?id=1868637|