CVE-2018-4264 in Safari
Summary
by MITRE
Multiple memory corruption issues were addressed with improved memory handling. This issue affected versions prior to iOS 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, iCloud for Windows 7.6.
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Analysis
by VulDB Data Team • 03/01/2020
The vulnerability identified as CVE-2018-4264 represents a critical memory corruption issue that affected multiple Apple operating systems and applications. This flaw emerged from inadequate memory management practices within Apple's software ecosystem, specifically targeting versions prior to the security updates released in iOS 11.4.1, tvOS 11.4.1, watchOS 4.3.2, Safari 11.1.2, iTunes 12.8 for Windows, and iCloud for Windows 7.6. The vulnerability demonstrates the inherent risks associated with improper memory handling mechanisms that can lead to system instability and potential exploitation by malicious actors.
The technical root cause of CVE-2018-4264 stems from insufficient memory validation and handling within Apple's core software components. Memory corruption vulnerabilities typically arise when applications fail to properly validate memory operations or when they perform operations on memory that has already been freed or is otherwise invalid. This particular flaw likely involved buffer overflows, use-after-free conditions, or other memory management errors that could be triggered through normal user interactions or malicious input. The vulnerability falls under the CWE-125 weakness category, which describes out-of-bounds read conditions, and may also relate to CWE-787, which covers out-of-bounds write operations. These memory-related issues create opportunities for attackers to execute arbitrary code or cause system crashes that could be exploited for privilege escalation.
The operational impact of CVE-2018-4264 extends across Apple's entire ecosystem, affecting not only mobile devices but also desktop and cloud services. The vulnerability's presence in Safari 11.1.2 and iTunes 12.8 for Windows indicates that web-based attacks could potentially exploit this flaw through malicious websites or crafted files. Users of affected versions faced significant security risks as the memory corruption could be leveraged to bypass security mechanisms, execute unauthorized code, or cause denial-of-service conditions. The widespread nature of the affected products, spanning iOS, tvOS, watchOS, Safari, iTunes, and iCloud, created a substantial attack surface that required immediate patching across all platforms. This vulnerability particularly impacted enterprise users and organizations relying on Apple's ecosystem, as it could potentially enable attackers to gain unauthorized access to sensitive data or compromise entire device fleets.
Mitigation strategies for CVE-2018-4264 required immediate deployment of Apple's security updates, with the primary recommendation being the installation of the latest versions of affected software. System administrators needed to prioritize patching across all affected platforms, including mobile devices, desktop applications, and cloud services. The remediation process involved not only updating individual software components but also ensuring that all related applications within Apple's ecosystem remained synchronized with the latest security patches. Organizations should have implemented comprehensive vulnerability management processes to identify and remediate all systems running affected versions. Additionally, network monitoring and endpoint protection solutions were recommended to detect potential exploitation attempts, while security teams should have conducted thorough risk assessments to determine the potential impact on their specific environments. The vulnerability highlighted the importance of maintaining up-to-date software and implementing robust patch management processes to prevent exploitation of known memory corruption vulnerabilities.