CVE-2022-39165 in AIX
Summary
by MITRE • 12/23/2022
IBM AIX 7.1, 7.2, 7.3, and VIOS 3.1could allow a non-privileged local user to exploit a vulnerability in CAA to cause a denial of service. IBM X-Force ID: 235183.
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Analysis
by VulDB Data Team • 01/23/2023
The vulnerability identified as CVE-2022-39165 affects IBM AIX operating systems version 7.1, 7.2, 7.3, and IBM VIOS 3.1 platforms, specifically targeting the Common Application Architecture (CAA) component. This issue represents a local privilege escalation vulnerability that allows unprivileged users to potentially disrupt system operations through a denial of service attack vector. The flaw exists within the CAA framework which serves as a foundational component for application development and system integration across these IBM operating system versions.
The technical implementation of this vulnerability stems from improper handling of certain system resources within the CAA module that governs application behavior and system interactions. When a non-privileged local user executes specific malicious operations against the CAA subsystem, the vulnerability can cause the system to enter an unstable state where critical processes become unresponsive or terminate unexpectedly. This occurs due to inadequate input validation and resource management within the CAA component, creating conditions where normal system operations can be disrupted through carefully crafted user-level actions. The flaw manifests as a failure to properly handle memory allocation or process management within the CAA framework, leading to system instability and potential complete service disruption.
The operational impact of this vulnerability extends beyond simple service interruption as it affects the fundamental reliability and availability of IBM AIX and VIOS systems. Organizations running these affected versions may experience unexpected system crashes, application failures, and complete service outages that can severely impact business operations and data availability. The local nature of the exploit means that attackers do not require elevated privileges to potentially cause significant disruption, making this vulnerability particularly concerning for environments where multiple users have access to system resources. System administrators may find that routine operations become unreliable, and the overall stability of mission-critical applications running on these platforms can be compromised.
Mitigation strategies for CVE-2022-39165 should prioritize immediate application of IBM security patches and updates released for the affected AIX and VIOS versions. Organizations should conduct comprehensive system assessments to identify all instances running vulnerable software versions and establish monitoring protocols to detect potential exploitation attempts. Network segmentation and access controls should be reinforced to limit local user privileges where possible, while implementing robust logging and alerting mechanisms to detect anomalous system behavior that might indicate exploitation attempts. The vulnerability aligns with CWE-121, which addresses stack-based buffer overflow conditions, and may be categorized under ATT&CK technique T1499 for network denial of service, though the local nature of this specific flaw requires additional consideration of local privilege escalation tactics within the ATT&CK framework. Regular system maintenance and vulnerability management programs should be strengthened to prevent similar issues from arising in the future, particularly focusing on proper resource management and input validation within system components.