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Security Bulletin: TS3000 (TSSC/IMC) is vulnerable to privilege escalation vulnerability due to polkit ( CVE-2021-4034 )

Security Bulletin


Summary

A privilege escalation vulnerability has been discovered in pkexec, a component of polkit. The TSSC does not use pkexec, but the executable does exist on the system. A patch has been provided that removes the executable from the file system.

Vulnerability Details

CVEID:   CVE-2021-4034
DESCRIPTION:   Polkit could allow a local authenticated attacker to gain elevated privileges on the system, caused by incorrect handling of the argument vectors in the pkexec utility. By crafting environment variables in a specific way, an attacker could exploit this vulnerability to execute commands with root privileges.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/218087 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Affected ProductVersion
TSSC/IMC9.2.16
TSSC/IMC9.2.14
TSSC/IMC9.2.11
TSSC/IMC9.1.11
TSSC/IMC9.1.9
TSSC/IMC9.1.7
TSSC/IMC9.0.6
TSSC/IMC9.0.4
TSSC/IMC8.6.6
TSSC/IMC8.5.5

 


Remediation/Fixes

IBM strongly recommends addressing the vulnerability now.

ProductVersionRemediation/Fix/Instructions
TSSC/IMC9.2.16Download patch and execute on TSSC/IMC system
TSSC/IMC9.2.14Download patch and execute on TSSC/IMC system
TSSC/IMC9.2.11Download patch and execute on TSSC/IMC system
TSSC/IMC9.1.11Download patch and execute on TSSC/IMC system
TSSC/IMC9.1.9Download patch and execute on TSSC/IMC system
TSSC/IMC9.1.7Download patch and execute on TSSC/IMC system
TSSC/IMC9.0.6Download patch and execute on TSSC/IMC system
TSSC/IMC9.0.4Download patch and execute on TSSC/IMC system
TSSC/IMC8.6.6Download patch and execute on TSSC/IMC system
TSSC/IMC8.5.5Download patch and execute on TSSC/IMC system

  

Workarounds and Mitigations

None

 

Get Notified about Future Security Bulletins

References

Off

 

 

Change History

29 Apr 2022: 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

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location

Worldwide

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Document Information

Modified date:
05 May 2022

UID

ibm16583163