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Security Bulletin: PowerVC installation on RHEL is vulnerable to MariaDB with CVE-2021-27928

Security Bulletin


Summary guidance: A remote code execution issue was discovered in MariaDB in the version PowerVC ships. An untrusted search path leads to eval injection, in which a database SUPER user can execute OS commands after modifying wsrep_provider and wsrep_notify_cmd.

Vulnerability Details

CVEID:   CVE-2021-27928
DESCRIPTION:   MariaDB could allow a remote authenticated attacker to execute arbitrary commands on the system, caused by improper input validation. By sending specially-crafted input using the wsrep_provider and wsrep_notify_cmd parameters, an attacker could exploit this vulnerability to execute arbitrary OS commands on the system.
CVSS Base score: 9.8
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)Version(s)



IBM strongly recommends addressing the vulnerability now by upgrading the MariaDB package to the ifix shipped version.


IBM PowerVC2.0.2IT40495 
IBM PowerVC2.0.2.1IT40495 

Workarounds and Mitigations


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Change History

07 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.


Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location


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Document Information

Modified date:
18 May 2022