Security Bulletin
Summary
Polkit is shipped with PDA OS Security kits. This Bulletin provides mitigation for the reported CVE
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 Product(s) | Version(s) |
| IBM Netezza PDA OS Security | All Versions |
Remediation/Fixes
None
Workarounds and Mitigations
Temporary mitigation of the reported CVE : CVE-2021-4034, removing the SUID-bit from pkexec on PureData System for Analytics N200x and N3001 is as follows:
Execute below step using "root" user on both ha1/ha2 hosts
# chmod 0755 /usr/bin/pkexec
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
31 Jan 2022: Original 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:
31 January 2022
UID
ibm16552330