#VU59268 Security restrictions bypass in IBM AIX - CVE-2021-38990

Vulnerability identifier: #VU59268

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-38990

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
IBM AIX
Operating systems & Components / Operating system

Vendor: IBM Corporation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to an error in he mount command. A local user can execute arbitrary code with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

IBM AIX: 7.1 - 7.2.5

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External links
https://aix.software.ibm.com/aix/efixes/security/mount_advisory.asc

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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.