Input validation error in IBM VIOS and IBM AIX - CVE-2021-38955
Published: March 1, 2022
Vulnerability identifier: #VU60916
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-38955
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a file creation issue in the AIX audit user commands. A local administrator can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Affected software
IBM VIOS
IBM AIX
IBM AIX
How to mitigate CVE-2021-38955
Install updates from vendor's website.
IBM VIOS - addressed in versions 3.1.1.30, 3.1.1.40, 3.1.1.50, 3.1.2.10, 3.1.2.21, 3.1.3.10, 3.1.3.14
IBM AIX - addressed in versions 7.1.5.7, 7.1.5.8, 7.1.5.9, 7.2.4.3, 7.2.4.4, 7.2.4.5, 7.2.5.1, 7.2.5.2, 7.2.5.3, 7.3.0.1
IBM AIX - addressed in versions 7.1.5.7, 7.1.5.8, 7.1.5.9, 7.2.4.3, 7.2.4.4, 7.2.4.5, 7.2.5.1, 7.2.5.2, 7.2.5.3, 7.3.0.1