IBM Support

Security Bulletin: Vulnerability in GnuTLS affects Power Hardware Management Console ( CVE-2018-10845 CVE-2018-10844)

Created by Vardhaman Nara… on
Published URL:
https://www.ibm.com/support/pages/node/794457
794457

Security Bulletin


Summary

It was found that GnuTLS's implementation of HMAC-SHA-384 and HMAC-SHA-256 was vulnerable to a Lucky Thirteen-style attack. A remote attacker could use this flaw to conduct distinguishing attacks and plain text recovery attacks via statistical analysis of timing data using crafted packets.

Vulnerability Details

CVEID: CVE-2018-10845
DESCRIPTION: GnuTLS could allow a remote attacker to obtain sensitive information, caused by a flaw in the implementation of HMAC-SHA-384 . By sending a specially-crafted packet, a remote attacker could exploit this vulnerability to obtain information.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/148730 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID: CVE-2018-10844
DESCRIPTION: GnuTLS could allow a remote attacker to obtain sensitive information, caused by a flaw in the implementation of HMAC-SHA-256. By sending a specially-crafted packet, a remote attacker could exploit this vulnerability to obtain information.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/148731 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

Power HMC V8.7.0.0
Power HMC V9.1.910.0

Remediation/Fixes

Remediation/Fixes

  The following fixes are available on IBM Fix Central at: http://www-933.ibm.com/support/fixcentral/

Product
VRMF
APAR
Remediation/Fix
Power HMC
V8.8.7.2 PTF3 ppc
MB04193
Power HMC
V8.8.7.2 PTF3 x86
MB04192
Power HMC
V9.1.921.0  PTF3 ppc
MB04195
Power HMC
V9.1.920.0  PTF3 x86
MB04194

Workarounds and Mitigations

None

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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

Change History

Initial Version: 3 March 2019

*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.

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Document Information

Modified date:
22 September 2021

UID

ibm10794457

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