CVE-2018-4033 in CleanMyMac X
Summary
by MITRE
The CleanMyMac X software contains an exploitable privilege escalation vulnerability due to improper input validation. An attacker with local access could use this vulnerability to modify the file system as root.
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Analysis
by VulDB Data Team • 06/26/2023
The vulnerability identified as CVE-2018-4033 resides within the CleanMyMac X software ecosystem, representing a critical privilege escalation flaw that fundamentally undermines system security. This vulnerability manifests through inadequate input validation mechanisms within the software's privileged components, creating an exploitable pathway for local attackers to elevate their privileges from standard user level to root access. The flaw specifically affects macOS environments where CleanMyMac X is installed, making it particularly concerning given the widespread adoption of this system optimization tool among both individual users and enterprise environments.
The technical implementation of this vulnerability stems from the software's failure to properly validate and sanitize input parameters within its privileged execution contexts. When CleanMyMac X performs administrative tasks, it relies on certain input validation checks that are insufficient to prevent malicious manipulation of system resources. This weakness allows an attacker with local system access to craft specific inputs that bypass normal security controls, ultimately enabling arbitrary file system modifications with root-level privileges. The vulnerability operates at the kernel or system-level execution context where standard user restrictions are circumvented, effectively granting full administrative control over the compromised system.
From an operational perspective, this vulnerability presents a severe risk to system integrity and data confidentiality. An attacker exploiting this flaw can modify critical system files, install malicious software, alter security configurations, and potentially establish persistent backdoors within the compromised environment. The impact extends beyond individual systems to enterprise networks where multiple machines may be running the vulnerable software, creating potential for lateral movement and widespread compromise. Organizations relying on CleanMyMac X for system maintenance are particularly vulnerable since the software's legitimate administrative functions create a legitimate attack vector that is difficult to distinguish from normal system behavior. This vulnerability directly aligns with CWE-20, which addresses "Improper Input Validation," and represents a classic privilege escalation attack pattern.
Mitigation strategies for CVE-2018-4033 should focus on immediate software updates from the vendor, which would include patches addressing the input validation deficiencies. System administrators should implement additional monitoring for unusual file system modifications and privileged process executions that could indicate exploitation attempts. Network segmentation and privilege minimization practices should be enforced to limit potential damage from successful exploitation. The vulnerability demonstrates the importance of secure coding practices and proper input validation as outlined in the OWASP Top Ten security principles, particularly focusing on preventing privilege escalation through inadequate validation of user-supplied data. Organizations should also consider implementing automated patch management systems to ensure timely deployment of security updates and reduce the window of exposure for such vulnerabilities.