IBM Support

Security Bulletin: This Power System update is being released to address CVE-2018-0732

Created by Sunitha Harish on
Published URL:
https://www.ibm.com/support/pages/node/875264
875264

Security Bulletin


Summary

POWER9: In response to a denial of service vulnerability in OpenSSL, a new Power Systems firmware update is being released to address Common Vulnerabilities and Exposures issue number CVE-2018-0732.
A malicious server can send a large prime value to a client during DH(E) TLS handshake causing the client to hang. This can disrupt the HMC communications for system management and partition operations.

Vulnerability Details

CVEID: CVE-2018-0732
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by the sending of a very large prime value to the client by a malicious server during key agreement in a TLS handshake. By spending an unreasonably long period of time generating a key for this prime, a remote attacker could exploit this vulnerability to cause the client to hang.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/144658 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

Firmware release FW910 and FW920 are affected.

Remediation/Fixes

Customers with the products below, install FW910.30
1) IBM Power Systems S922 (9009-22A)
2) IBM Power SystemsH922 (9223-22H)
3) IBM Power Systems S914 (9009-41A)
4) IBM Power Systems S924 (9009-42A)
5) IBM Power Systems H924 (9223-42H)
6) IBM Power Systems L922 (9008-22L)
Customers with the products below, install FW920.30
 
1) IBM Power Systems E950(9040-MR9)
2) IBM Power Systems E980(9080-M9S)

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

*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:
07 December 2021

UID

ibm10875264

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