CVE-2019-8823 in iTunes
Summary
by MITRE
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 13.2 and iPadOS 13.2, tvOS 13.2, Safari 13.0.3, iTunes for Windows 12.10.2, iCloud for Windows 11.0, iCloud for Windows 7.15. Processing maliciously crafted web content may lead to arbitrary code execution.
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Analysis
by VulDB Data Team • 02/01/2024
The vulnerability identified as CVE-2019-8823 represents a critical memory corruption issue that affects multiple Apple operating systems and applications. This flaw stems from inadequate memory handling mechanisms within Apple's software stack, specifically impacting iOS 13.2, iPadOS 13.2, tvOS 13.2, Safari 13.0.3, and various versions of iTunes and iCloud for Windows. The vulnerability manifests when processing maliciously crafted web content, creating a pathway for attackers to achieve arbitrary code execution on affected systems. Such memory corruption issues are particularly dangerous because they can be exploited to bypass security controls and gain unauthorized access to system resources.
The technical nature of this vulnerability aligns with common memory safety issues categorized under CWE-122, which deals with heap-based buffer overflows, and CWE-787, which addresses out-of-bounds writes. These classifications indicate that the flaw likely involves improper bounds checking during memory allocation or deallocation processes. The vulnerability's exploitation potential is significantly enhanced by its ability to be triggered through web content, making it particularly dangerous in the context of modern browser-based attacks where users frequently interact with untrusted web pages. Attackers can craft malicious web pages that, when loaded in Safari or other affected applications, trigger the memory corruption conditions leading to code execution.
From an operational perspective, this vulnerability presents a substantial risk to organizations and individual users alike, as it enables remote code execution through web-based attacks. The impact extends beyond individual devices to potentially compromise entire networks when users visit malicious websites or click on compromised links. The affected applications span across Apple's ecosystem, increasing the attack surface and making it more difficult for users to protect themselves completely. This vulnerability particularly affects web browsing environments where users expect to be safe from malicious content, making it a prime target for phishing campaigns and drive-by download attacks. The fact that it affects multiple platforms including mobile operating systems, desktop applications, and web browsers creates a complex security landscape that requires comprehensive mitigation strategies.
Mitigation strategies for CVE-2019-8823 should prioritize immediate patching of all affected systems, as the vulnerability has been addressed in the specified software updates. Organizations should implement network-level protections including web filtering and content inspection to prevent access to malicious websites. Browser security configurations should be hardened by disabling unnecessary plugins and maintaining strict content security policies. Users should be educated about the risks of visiting untrusted websites and the importance of keeping their software updated. The remediation process should include verification of patch installation across all affected platforms, including iOS devices, macOS systems, and Windows applications. Security monitoring should be enhanced to detect potential exploitation attempts, and incident response procedures should be updated to address this specific vulnerability. Additionally, organizations should consider implementing sandboxing mechanisms and privilege separation to limit the potential impact if exploitation occurs, aligning with defensive techniques outlined in the MITRE ATT&CK framework under the execution and privilege escalation categories.