CVE-2022-32842 in macOS
Summary
by MITRE • 09/23/2022
An out-of-bounds read issue was addressed with improved input validation. This issue is fixed in Security Update 2022-005 Catalina, macOS Monterey 12.5. An app may be able to gain elevated privileges.
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Analysis
by VulDB Data Team • 09/23/2022
This vulnerability represents a classic out-of-bounds read flaw that was successfully addressed through enhanced input validation mechanisms within the macOS security framework. The issue manifested as a memory access violation where an application could potentially read data from memory locations beyond the bounds of allocated buffers, creating a significant security risk that could be exploited by malicious software to gain elevated privileges. The vulnerability was specifically patched in Security Update 2022-005 for macOS Catalina and macOS Monterey 12.5, demonstrating Apple's ongoing commitment to addressing memory safety issues that could compromise system integrity.
The technical nature of this out-of-bounds read vulnerability aligns with common software security weaknesses classified under CWE-129, which encompasses issues related to insufficient input validation and improper bounds checking in memory operations. This flaw falls within the broader category of memory corruption vulnerabilities that can be leveraged by attackers to execute arbitrary code or escalate privileges. The vulnerability's potential for privilege escalation directly connects to ATT&CK technique T1068, which describes the exploitation of system vulnerabilities to gain elevated privileges. When an application can successfully perform out-of-bounds reads, it often indicates that the system lacks proper bounds checking mechanisms that should prevent unauthorized memory access patterns.
The operational impact of this vulnerability extends beyond simple data corruption, as it creates a pathway for malicious actors to bypass security controls that normally prevent unauthorized access to system resources. An attacker who successfully exploits this vulnerability could potentially execute code with higher privileges than originally intended, undermining the principle of least privilege that forms the foundation of modern operating system security models. This type of vulnerability is particularly concerning because it can be exploited by applications that may appear legitimate, making detection and prevention more challenging within the security monitoring landscape.
Organizations should prioritize applying the Security Update 2022-005 as a critical remediation step to address this vulnerability, particularly in environments where macOS systems are exposed to untrusted applications or network threats. The update implements enhanced input validation procedures that prevent applications from accessing memory regions beyond their allocated boundaries, effectively closing the attack vector that could lead to privilege escalation. System administrators should also consider implementing additional monitoring controls to detect unusual memory access patterns that might indicate exploitation attempts, while maintaining awareness of similar vulnerabilities that may exist in other software components within the broader ecosystem.