CVE-2022-41290 in AIX
Summary
by MITRE • 12/23/2022
IBM AIX 7.1, 7.2, 7.3, and VIOS 3.1 could allow a non-privileged local user to exploit a vulnerability in the rm_rlcache_file command to obtain root privileges. IBM X-Force ID: 236690.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 12/24/2022
The vulnerability identified as CVE-2022-41290 affects IBM AIX operating systems version 7.1, 7.2, 7.3, and IBM VIOS 3.1 platforms. This represents a local privilege escalation flaw that enables unprivileged users to elevate their system privileges to root level through manipulation of the rm_rlcache_file command. The vulnerability exists within the system's privilege management mechanisms and specifically targets the command execution flow that handles resource location cache file operations.
The technical implementation of this vulnerability stems from improper privilege handling within the rm_rlcache_file utility. When executing this command, the system fails to properly validate or restrict the execution context, allowing a local user to manipulate parameters or file paths that should normally be restricted to privileged operations. The flaw manifests when the command processes certain input parameters or file references without adequate access controls, creating a pathway for privilege elevation. This type of vulnerability falls under CWE-276, which describes improper privilege management in software applications.
From an operational perspective, this vulnerability presents significant risk to IBM AIX and VIOS environments as it allows any local user to gain root access without requiring authentication or prior exploitation. The impact extends beyond simple privilege escalation since root access provides complete system control, enabling users to modify system files, install malicious software, access sensitive data, and potentially compromise the entire system infrastructure. Attackers could leverage this vulnerability to establish persistent access, escalate their privileges beyond normal user boundaries, and potentially use the compromised system as a launch point for further attacks within the network.
The exploitation of CVE-2022-41290 aligns with ATT&CK technique T1068, which covers 'Exploitation for Privilege Escalation' and T1548.1, 'Abuse Elevation Control Mechanism'. The vulnerability creates a direct path for attackers to bypass normal system security controls and achieve elevated privileges. Organizations running affected IBM AIX and VIOS systems face immediate risk as the vulnerability can be exploited locally without requiring network access or advanced attack techniques. The relatively straightforward nature of the exploit means that even less sophisticated attackers could potentially leverage this weakness to gain unauthorized root access.
IBM has issued patches and fixes for this vulnerability that should be applied immediately to affected systems. System administrators should also implement monitoring for unusual command executions involving rm_rlcache_file and ensure proper system hardening practices are in place. Additional mitigations include restricting local user access to privileged commands, implementing proper file system permissions, and conducting regular security audits to identify potential privilege escalation vectors. The vulnerability demonstrates the critical importance of proper privilege management and input validation in system utilities, particularly those handling cache or resource management functions within enterprise operating systems.