Privilege escalation in IBM AIX

1) Input validation error

EUVDB-ID: #VU70341

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-41290

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input within the rm_rlcache_file user command. A local user can pass a specially crafted input to the affected command and execute arbitrary code with root privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

IBM AIX: 7.1.1 - 7.3.0.1

External links

http://aix.software.ibm.com/aix/efixes/security/rmrlcache_advisory.asc
http://www.ibm.com/support/pages/node/6847917

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.