CVE-2017-7018 in iTunes
Summary
by MITRE
An issue was discovered in certain Apple products. iOS before 10.3.3 is affected. Safari before 10.1.2 is affected. iCloud before 6.2.2 on Windows is affected. iTunes before 12.6.2 on Windows is affected. tvOS before 10.2.2 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.
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Analysis
by VulDB Data Team • 06/09/2025
The vulnerability identified as CVE-2017-7018 represents a critical memory corruption flaw within Apple's WebKit rendering engine that affected multiple Apple operating systems and applications. This vulnerability resides in the core web browsing component that powers Safari browsers and embedded web views across Apple's ecosystem, making it particularly dangerous as it could be exploited through standard web browsing activities. The affected versions include iOS 10.3.2 and earlier, Safari 10.1.1 and earlier, iCloud 6.2.1 and earlier on Windows, iTunes 12.6.1 and earlier on Windows, and tvOS 10.2.1 and earlier, demonstrating the widespread impact across Apple's product portfolio. The vulnerability specifically manifests as a heap-based buffer overflow that occurs when WebKit processes maliciously crafted web content, allowing attackers to manipulate memory allocation patterns and potentially execute arbitrary code.
The technical nature of this vulnerability falls under CWE-121, heap-based buffer overflow, which is classified as a memory safety issue in the Common Weakness Enumeration catalog. This type of vulnerability occurs when an application writes data beyond the boundaries of a heap-allocated buffer, potentially overwriting adjacent memory locations and corrupting program execution. The WebKit component's handling of malformed web content triggers this condition, where attackers can craft specific web pages that, when loaded in a vulnerable browser, cause memory corruption that leads to either arbitrary code execution or application crashes. The exploitation mechanism leverages the browser's JavaScript engine and rendering pipeline to manipulate memory structures, making it particularly challenging to detect and prevent through traditional security measures.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as it provides attackers with the capability to execute arbitrary code on affected systems. This represents a significant threat to user security and privacy, as users could be compromised simply by visiting malicious websites, without requiring any additional interaction or user consent. The vulnerability affects not only personal devices but also enterprise environments where Apple products are widely deployed, creating potential attack vectors for advanced persistent threats. Mobile device users face particular risk since iOS devices often contain sensitive personal and corporate data, while Windows users with iCloud and iTunes installations are also exposed to similar threats. The vulnerability's ability to cause application crashes and memory corruption means that legitimate users could experience system instability and data loss, while attackers could leverage it for more sophisticated attacks such as privilege escalation or information disclosure.
Mitigation strategies for CVE-2017-7018 should prioritize immediate patch deployment across all affected Apple products, with particular emphasis on iOS devices and Safari browsers where the vulnerability is most critical. Apple released security updates for iOS 10.3.3, Safari 10.1.2, iCloud 6.2.2, iTunes 12.6.2, and tvOS 10.2.2 that address the underlying memory corruption issue. Organizations should implement network-based security controls such as web content filtering and sandboxing mechanisms to reduce exposure, while security teams should monitor for exploitation attempts through network traffic analysis. The vulnerability's classification under ATT&CK technique T1059.007 for command and scripting interpreter and T1068 for exploit for privilege escalation indicates that defenders should monitor for suspicious process creation and memory access patterns. Additionally, users should be educated about avoiding untrusted websites and maintaining updated software versions, while system administrators should consider implementing application whitelisting policies to prevent exploitation of similar vulnerabilities in the future.