CVE-2018-4375 in Safari
Summary
by MITRE
Multiple memory corruption issues were addressed with improved memory handling. This issue affected versions prior to iOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1, iCloud for Windows 7.8.
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Analysis
by VulDB Data Team • 04/08/2020
The vulnerability identified as CVE-2018-4375 represents a critical class of memory corruption issues that impacted multiple Apple operating systems and applications. This vulnerability stems from inadequate memory management practices within Apple's software ecosystem, specifically affecting versions prior to iOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1, and iCloud for Windows 7.8. The flaw manifests as improper memory handling that can lead to unpredictable system behavior and potential exploitation by malicious actors. These memory corruption vulnerabilities typically arise when software fails to properly manage memory allocation and deallocation processes, creating opportunities for attackers to manipulate memory contents and execute arbitrary code.
The technical nature of this vulnerability aligns with common CWE categories including CWE-125 Out-of-bounds Read and CWE-787 Out-of-bounds Write, which are fundamental memory safety issues that have been extensively documented in cybersecurity literature. The flaw likely involves buffer overflows or use-after-free conditions where applications attempt to access memory locations beyond their allocated bounds or continue using memory after it has been freed. Such issues are particularly dangerous because they can be exploited through various attack vectors including web content execution, file processing, or network communication. The vulnerability's impact is amplified by the widespread use of affected Apple products and applications, making it a significant concern for enterprise and individual users alike.
From an operational perspective, the exploitation of CVE-2018-4375 could enable attackers to achieve arbitrary code execution on targeted systems, potentially leading to complete system compromise. The attack surface is broad given that the vulnerability affects multiple platforms including mobile operating systems, desktop applications, and cloud synchronization services. This creates opportunities for attackers to leverage the vulnerability across different environments and attack chains. The fact that this vulnerability affected Safari web browser versions means that users could be compromised through web-based attacks, while the iTunes and iCloud components suggest potential for attacks through file processing or network synchronization activities. The vulnerability's presence in these widely-used applications significantly increases the potential attack surface and the likelihood of successful exploitation.
Mitigation strategies for CVE-2018-4375 should prioritize immediate software updates to the patched versions of affected systems. Apple's release of iOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1, and iCloud for Windows 7.8 addressed the underlying memory handling issues through improved memory management practices. Organizations should implement comprehensive patch management procedures to ensure all affected systems are updated promptly. Network monitoring solutions should be configured to detect potential exploitation attempts targeting this vulnerability, particularly in web browser environments. Security teams should also consider implementing additional protective measures such as web application firewalls, sandboxing mechanisms, and strict access controls for systems handling sensitive data. The vulnerability highlights the importance of maintaining up-to-date software security practices and demonstrates the critical nature of memory safety in preventing successful exploitation attempts. Organizations should also conduct regular security assessments to identify and remediate similar vulnerabilities in their software ecosystems, as memory corruption issues remain among the most prevalent and dangerous classes of software flaws in cybersecurity.