Polkit is used by IBM Cloud System OS. This security bulletin service applies to IBM Cloud System , IBM Cloud System Software and IBM Cloud System Software Suite.
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 Product(s) | Version(s) |
---|---|
IBM Cloud Pak System | 2.3.3.0, 2.3.3.1, 2.3.3.2, 2.3.3.3, 2.3.3.4 |
IBM Cloud Pak System | 2.3.0.1, 2.3.1.1, 2.3.2.0 |
For unsupported version/release/platform IBM recommends upgrading to a fixed, supported version of the product.
For IBM Cloud Pak System v2.3.0.1, v2.3.1.1, v2.3.2.0, v2.3.3.0, v.2.3.3.1, v.2.3.3.2, v.2.3.3.3, v2.3.3.3 Interim Fix 1, v2.3.3.4
upgrade to IBM Cloud Pak System v2.3.3.5 at Fix Central
Information on upgrading : <http://www.ibm.com/support/docview.wss?uid=ibm10887959>
Temporary mitigation for the reported CVE-2021-4034 remove the SUID-bit from pkexec as follows:
As “root” user execute the command
CPE | Name | Operator | Version |
---|---|---|---|
ibm cloud pak system software | eq | 2.3 |