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

Security Bulletin


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

Affected Product(s)Version(s)
P8 OpenPOWER release OP825OP825.50
Hardware Management Console System Firmware
v3.11_v3.23_hmc

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

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References

Complete CVSS v3 Guide
On-line Calculator v3

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

15 Jul 2021: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

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Document Information

Modified date:
10 May 2022

UID

ibm16520420

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