Security Bulletin: This Power System update is being released to address CVE 2021-29847

Summary

POWER8: In response to a security issue with BMC’s configuration, a new Power System firmware update is being released to address Common Vulnerabilities and Exposures issue number CVE 2019-29847.

Vulnerability Details

CVEID:CVE-2021-29847
**DESCRIPTION:**BMC firmware configuration changed to allow an authenticated user to open an insecure communication channel which could allow an attacker to obtain sensitive information using man in the middle techniques.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/205267 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N)

Affected Products and Versions

Remediation/Fixes

Customers with the products below running OP825, install OP825.51:

1. IBM Power System S821LC (8001-12C)

2. IBM Power System S822LC (8001-22C)

3. IBM Power System CS821LC (8005-12N)

4. IBM Power System CS822LC (8005-22N)

Customers with the products below running with firmware level v3.11_v3.25_hmc OP825, install OP825.51:

1. IBM Power Hardware Management Console (HMC) (7063-CR1)

After OP825.51 is installed, verify the configuration of port 80 by performing the following steps:

1. Access the BMC UI.
2. Navigate to “Configure -> Ports”.
3. Re-enable the “Web port” option by checking the box next to it.
4. Click “Save”.
5. Disable the “Web port” option by un-checking the box next to it.
6. Click “Save”.
7. Port 80 should now be disabled and in sync with the setting displayed in the BMC user interface.

Workarounds and Mitigations

None