CVE-2018-4299 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, watchOS 5, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.
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Analysis
by VulDB Data Team • 08/22/2023
The vulnerability identified as CVE-2018-4299 represents a critical class of memory corruption issues that plagued multiple Apple operating systems and applications prior to their respective security updates. This weakness stems from inadequate memory management practices that allowed attackers to potentially exploit memory handling flaws through various attack vectors. The vulnerability affected a broad ecosystem including iOS 11 and earlier versions, tvOS 11 and earlier, watchOS 4 and earlier, Safari 11 and earlier, iTunes 12.8 and earlier for Windows, and iCloud for Windows 7.6 and earlier versions. These affected components collectively represent fundamental system services and user-facing applications that handle sensitive data processing and network communications.
The technical flaw underlying CVE-2018-4299 manifests as improper memory handling mechanisms that fail to properly validate memory allocations, deallocations, or access patterns within Apple's software stack. This type of vulnerability typically arises when software components do not adequately check bounds, validate input parameters, or properly manage memory lifecycle operations. The memory corruption issues can lead to unpredictable behavior including application crashes, data corruption, or potentially arbitrary code execution when exploited by malicious actors. These memory handling deficiencies often align with common software security weaknesses categorized under CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write operations. The vulnerability's impact extends beyond simple crashes to potentially enable privilege escalation attacks that could allow unauthorized access to system resources.
The operational impact of CVE-2018-4299 presents significant risks to users of affected Apple products, particularly given the widespread adoption of these platforms across enterprise and consumer environments. Attackers could leverage these memory corruption vulnerabilities to execute malicious code on targeted systems, potentially leading to complete system compromise or data exfiltration. The vulnerability's presence across multiple platforms including mobile operating systems, desktop applications, and cloud synchronization services creates a broad attack surface that security professionals must address. Organizations using affected versions of Apple software faced increased exposure to zero-day exploits and targeted attacks, as the memory corruption issues could be triggered through various attack vectors including malicious web content, email attachments, or compromised network communications. The vulnerability's exploitation potential aligns with tactics described in the MITRE ATT&CK framework under techniques such as T1059 for command and scripting interpreter and T1068 for exploit for privilege escalation.
Mitigation strategies for CVE-2018-4299 require immediate deployment of security patches provided by Apple through their regular software update cycles. System administrators should prioritize updating all affected platforms including iOS devices, tvOS set-top boxes, watchOS smartwatches, Safari browsers, iTunes installations, and iCloud client applications. The recommended approach involves implementing comprehensive patch management processes that ensure all endpoints within an organization receive timely security updates. Additional protective measures include network monitoring for suspicious activities, application whitelisting to restrict execution of unauthorized code, and enhanced user awareness training regarding potential phishing attacks that could exploit these memory corruption vulnerabilities. Organizations should also consider implementing network segmentation and access controls to limit the potential impact of successful exploitation attempts. The vulnerability serves as a reminder of the critical importance of maintaining up-to-date security patches and proper memory management practices in software development lifecycle processes to prevent similar issues from occurring in future releases.