CVE-2017-6984 in iTunes
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. iTunes before 12.6.1 on Windows is affected. tvOS before 10.2.1 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 • 08/24/2024
The vulnerability identified as CVE-2017-6984 represents a critical memory corruption flaw within Apple's WebKit rendering engine that affects multiple operating systems and applications. This vulnerability specifically targets the WebKit component which serves as the foundational browser engine for Safari, iTunes, and various other Apple applications across iOS, macOS, tvOS, and Windows platforms. The flaw manifests in a way that allows remote attackers to exploit memory corruption issues through maliciously crafted web content, potentially leading to arbitrary code execution or denial of service conditions. The affected versions include iOS before 10.3.2, Safari before 10.1.1, iTunes before 12.6.1 on Windows, and tvOS before 10.2.1, indicating a widespread impact across Apple's ecosystem.
The technical nature of this vulnerability stems from improper memory handling within WebKit's JavaScript engine, which processes web content and executes scripts. When a user visits a malicious website containing crafted content, the WebKit engine fails to properly validate memory operations, leading to buffer overflows or other memory corruption conditions. This memory corruption can be exploited to overwrite critical memory locations, potentially allowing attackers to inject and execute arbitrary code with the privileges of the affected application. The vulnerability's classification aligns with CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write conditions. These weaknesses in memory management create opportunities for attackers to manipulate program execution flow and gain unauthorized access to system resources.
The operational impact of CVE-2017-6984 extends beyond individual device compromise to potentially affect entire user populations across Apple's platform ecosystem. Attackers could leverage this vulnerability through various attack vectors including malicious websites, compromised web advertisements, or phishing campaigns that direct users to exploit the memory corruption. The vulnerability's remote exploitability means that users do not need to perform any actions beyond visiting a malicious website, making it particularly dangerous for widespread deployment. Organizations using Apple devices for business purposes face significant risk as this vulnerability could enable attackers to access sensitive corporate data, perform unauthorized operations, or establish persistent access to network resources. The denial of service aspect of this vulnerability also creates potential for disruption attacks that could render applications unusable and impact productivity.
Mitigation strategies for CVE-2017-6984 primarily focus on immediate software updates and security hardening measures. Apple released patches for all affected versions including iOS 10.3.2, Safari 10.1.1, iTunes 12.6.1, and tvOS 10.2.1, which address the underlying memory corruption issues in WebKit. Organizations should implement rapid deployment of these security updates across all affected Apple devices within their environment. Network security controls such as web filtering, intrusion prevention systems, and content inspection tools can provide additional layers of protection by blocking access to known malicious domains. Security monitoring should include detection of unusual application behavior or memory access patterns that might indicate exploitation attempts. The vulnerability's characteristics align with ATT&CK technique T1059, which covers command and scripting interpreter, and T1203, which covers Exploitation for Client Execution, making it important for security teams to monitor for these specific attack patterns in their network traffic and endpoint logs.