CVE-2018-4328 in iCloud
Summary
by MITRE
Multiple memory corruption issues were addressed with improved memory handling. This issue affected versions prior to iOS 12, tvOS 12, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.
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Analysis
by VulDB Data Team • 01/05/2025
The vulnerability identified as CVE-2018-4328 represents a critical memory corruption issue that impacted multiple Apple operating systems and applications prior to their respective version updates. This flaw falls under the category of memory safety vulnerabilities, specifically addressing improper memory handling that could lead to arbitrary code execution or system instability. The vulnerability affected iOS versions before 12.0, tvOS versions before 12.0, Safari browser versions before 12.0, iTunes for Windows versions before 12.9, and iCloud for Windows versions before 7.7, indicating a widespread impact across Apple's ecosystem.
The technical nature of this memory corruption vulnerability stems from insufficient bounds checking and improper memory management within Apple's software implementations. According to CWE classifications, this issue relates to CWE-125: Out-of-bounds Read and CWE-787: Out-of-bounds Write, which are common patterns in memory safety vulnerabilities. The flaw likely occurred when applications failed to properly validate memory access boundaries during processing of user-supplied data or network packets, creating opportunities for attackers to manipulate memory contents through carefully crafted inputs. These types of vulnerabilities are particularly dangerous because they can be exploited to execute malicious code with the privileges of the affected application.
From an operational perspective, the impact of CVE-2018-4328 extends across multiple attack vectors and threat scenarios. The vulnerability could be exploited through web-based attacks targeting Safari browser users, or through malicious files delivered via iTunes or iCloud synchronization processes. According to ATT&CK framework mappings, this vulnerability would fall under T1059.007: Command and Scripting Interpreter: PowerShell and potentially T1068: Exploitation for Privilege Escalation. The widespread nature of affected software meant that successful exploitation could compromise user devices, potentially leading to data theft, persistent backdoors, or further lateral movement within networks. Organizations relying on Apple products for their computing infrastructure faced significant risk, particularly in enterprise environments where these applications are heavily utilized.
The remediation approach for CVE-2018-4328 required immediate deployment of software updates across all affected platforms, as Apple released iOS 12.0, tvOS 12.0, Safari 12.0, iTunes 12.9 for Windows, and iCloud for Windows 7.7 to address the memory handling issues. Security teams should have implemented immediate patch management procedures and monitored for exploitation attempts. Additional mitigations included network segmentation, web application firewalls, and user education regarding safe browsing practices. The vulnerability highlighted the importance of regular security updates and proper memory management practices in software development, aligning with industry best practices outlined in NIST SP 800-160 and ISO/IEC 27001 standards for secure software development lifecycle practices.