Denial of service in IBM VIOS

Published: 2022-02-23

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-38994 CVE-2021-38995
CWE-ID	CWE-20
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	IBM VIOS Server applications / Application servers
Vendor	IBM Corporation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU60836

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-38994

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the AIX kernel. A local user can run a specially crafted program to perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM VIOS: 3.1.0 - 3.1.2

CPE2.3

External links

https://aix.software.ibm.com/aix/efixes/security/kernel_advisory3.asc

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

EUVDB-ID: #VU60837