CVE-2017-7005 in Safari
Summary
by MITRE
An issue was discovered in certain Apple products. iOS before 10.3.2 is affected. Safari before 10.1.1 is affected. tvOS before 10.2.1 is affected. The issue involves the "JavaScriptCore" 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 • 06/14/2025
The vulnerability identified as CVE-2017-7005 represents a critical memory corruption flaw within Apple's JavaScriptCore engine that affects multiple operating systems and applications. This vulnerability resides in the JavaScriptCore component which serves as the core JavaScript engine powering Safari web browser and various other Apple applications that utilize web technologies. The affected versions include iOS before 10.3.2, Safari before 10.1.1, and tvOS before 10.2.1, indicating a widespread impact across Apple's ecosystem. The flaw specifically manifests when processing crafted web content, creating a dangerous attack vector that could be exploited by remote adversaries without user interaction.
The technical nature of this vulnerability stems from improper memory management within JavaScriptCore's handling of JavaScript objects and memory allocation patterns. When a malicious website delivers specifically crafted JavaScript code, the engine fails to properly validate memory boundaries and object references, leading to memory corruption conditions that can be leveraged to execute arbitrary code or trigger application crashes. This type of vulnerability falls under the CWE-125 vulnerability category, which represents "Out-of-bounds Read" conditions, though the specific manifestation involves memory corruption that can result in code execution. The vulnerability's exploitation requires no user interaction, making it particularly dangerous as users can be compromised simply by visiting malicious websites.
The operational impact of CVE-2017-7005 extends beyond individual device compromise to potentially enable broader attack campaigns. Attackers can leverage this vulnerability to gain unauthorized code execution capabilities on targeted devices, potentially leading to complete system compromise and data exfiltration. The memory corruption aspect creates instability that can result in denial of service conditions, making the affected systems unreliable and potentially unusable. From an adversary perspective, this vulnerability aligns with ATT&CK technique T1059.007 for "Command and Scripting Interpreter: JavaScript" and T1203 for "Exploitation for Client Execution" as it allows attackers to execute malicious JavaScript code in the context of the affected applications. The vulnerability's presence across multiple Apple platforms including mobile devices and television systems creates a substantial attack surface that could be exploited in targeted campaigns.
The exploitation of this vulnerability demonstrates the critical importance of timely security updates and patch management within enterprise and consumer environments. Organizations and individuals must prioritize updating their Apple devices to versions that contain the necessary security patches, as the vulnerability remains exploitable in affected versions. The JavaScriptCore engine's integration with multiple Apple applications means that a single patch may address multiple attack vectors, but comprehensive remediation requires updating all affected components. Security professionals should monitor for indicators of compromise related to this vulnerability, particularly in web traffic analysis and endpoint detection systems that might identify attempts to exploit this memory corruption flaw. The vulnerability also highlights the ongoing challenges in securing complex software ecosystems where a single component's flaw can affect entire platforms, emphasizing the need for robust security testing and continuous monitoring protocols.