CVE-2019-8672 in iTunes
Summary
by MITRE
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3, Safari 12.1.2, iTunes for Windows 12.9.6, iCloud for Windows 7.13, iCloud for Windows 10.6. Processing maliciously crafted web content may lead to arbitrary code execution.
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Analysis
by VulDB Data Team • 02/03/2025
The vulnerability identified as CVE-2019-8672 represents a critical memory corruption issue affecting multiple Apple operating systems and applications. This flaw resides in the way Apple handles memory allocation and deallocation within its web rendering and processing components, specifically impacting the Safari browser and related applications. The vulnerability stems from insufficient bounds checking and improper memory management practices that allow attackers to manipulate memory structures through carefully crafted web content. The issue affects iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3, Safari 12.1.2, iTunes for Windows 12.9.6, iCloud for Windows 7.13, and iCloud for Windows 10.6, indicating a widespread impact across Apple's ecosystem. From a cybersecurity perspective, this vulnerability aligns with CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds writes, both of which are classic memory corruption patterns that can lead to arbitrary code execution.
The technical exploitation of this vulnerability occurs when users encounter maliciously crafted web content that triggers improper memory handling within Apple's web processing engines. Attackers can construct web pages containing specially formatted data that, when rendered by Safari or processed through iTunes and iCloud applications, causes memory corruption. This corruption manifests as buffer overflows or use-after-free conditions that can be leveraged to overwrite critical memory locations. The exploitation pathway follows typical attack patterns described in the MITRE ATT&CK framework under technique T1059, specifically targeting application execution through web-based attacks. When successful, the memory corruption allows attackers to execute arbitrary code with the privileges of the affected application, potentially leading to complete system compromise. The vulnerability's exploitation requires user interaction through web browsing, making it particularly dangerous in phishing campaigns and drive-by attack scenarios where users might inadvertently access malicious websites.
The operational impact of CVE-2019-8672 extends beyond individual user devices to encompass enterprise environments where Apple products are extensively deployed. Organizations relying on Apple's ecosystem for productivity and communication face significant risk from this vulnerability, as it can be exploited through seemingly benign web interactions. The vulnerability's presence in both mobile and desktop operating systems creates a broad attack surface, with potential for lateral movement within networks where Apple devices are connected. Security teams must consider the implications for email filtering, web proxy configurations, and endpoint protection strategies. The vulnerability's classification as a remote code execution flaw means that attackers can compromise systems without requiring physical access or user credentials, making it particularly concerning for organizations with limited security controls. Network monitoring becomes crucial as attackers may use this vulnerability to establish persistent access or deploy additional malware payloads.
Mitigation strategies for CVE-2019-8672 primarily focus on timely patch deployment and defensive measures. Apple's release of updates for iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3, Safari 12.1.2, iTunes for Windows 12.9.6, iCloud for Windows 7.13, and iCloud for Windows 10.6 provides the primary defense mechanism against exploitation. Security administrators should prioritize immediate deployment of these patches across all affected systems, particularly in enterprise environments where user behavior cannot be fully controlled. Additional defensive measures include implementing web content filtering solutions, disabling unnecessary web features in browsers, and establishing user education programs about the dangers of visiting untrusted websites. Network security teams should monitor for suspicious web traffic patterns and implement intrusion detection systems that can identify exploitation attempts. The vulnerability's nature makes it particularly susceptible to exploit mitigation through sandboxing and memory protection mechanisms, which Apple's updates address through improved memory handling practices. Organizations should also consider implementing zero-trust network architectures that limit the potential impact of successful exploitation attempts.