CVE-2019-6201 in iCloud
Summary
by MITRE
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.
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Analysis
by VulDB Data Team • 05/21/2020
The vulnerability identified as CVE-2019-6201 represents a critical memory corruption flaw affecting multiple Apple operating systems and applications including iOS 12.2, tvOS 12.2, Safari 12.1, iTunes 12.9.4 for Windows, and iCloud for Windows 7.11. This issue falls under the category of memory safety vulnerabilities that can be exploited to achieve arbitrary code execution through maliciously crafted web content. The vulnerability stems from inadequate memory handling mechanisms within Apple's web rendering and processing components, creating potential attack vectors that adversaries can leverage to compromise affected systems.
The technical flaw manifests as improper memory management during the processing of web content, where the affected applications fail to properly validate or sanitize input data before allocating memory for processing. This weakness allows attackers to craft specially designed web pages or content that, when rendered by the vulnerable software, triggers memory corruption conditions. The vulnerability is particularly dangerous because it operates at the application level where web content is processed, making it accessible through standard web browsing activities. According to CWE classification, this vulnerability maps to CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write conditions, both of which are common manifestations of memory corruption issues.
The operational impact of CVE-2019-6201 extends beyond simple system instability or crashes, as it provides attackers with the capability to execute arbitrary code on compromised systems. This means that successful exploitation could allow threat actors to gain full control over affected devices, potentially leading to data exfiltration, persistent backdoor installation, or further network infiltration. The vulnerability affects a wide range of Apple products and services, making it particularly attractive to threat actors seeking broad exploitation capabilities. From an ATT&CK framework perspective, this vulnerability aligns with techniques such as T1203 - Exploitation for Client Execution and T1059 - Command and Scripting Interpreter, as it enables attackers to execute malicious code through web-based attack vectors.
Mitigation strategies for CVE-2019-6201 primarily focus on immediate patch deployment through the recommended software updates. Apple has addressed this vulnerability in iOS 12.2, tvOS 12.2, Safari 12.1, iTunes 12.9.4 for Windows, and iCloud for Windows 7.11, making timely updates essential for system protection. Organizations should implement comprehensive patch management procedures to ensure all affected systems receive the necessary updates. Additional protective measures include implementing web content filtering solutions, restricting user access to untrusted websites, and deploying network monitoring tools to detect potential exploitation attempts. Security teams should also consider implementing browser hardening configurations and maintaining regular vulnerability assessments to identify and remediate similar issues before they can be exploited by adversaries.