CVE-2017-2366 in iTunes
Summary
by MITRE
An issue was discovered in certain Apple products. iOS before 10.2.1 is affected. Safari before 10.0.3 is affected. iCloud before 6.1.1 is affected. iTunes before 12.5.5 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.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 11/04/2022
The vulnerability identified as CVE-2017-2366 represents a critical memory corruption flaw within Apple's WebKit rendering engine that affects multiple iOS and macOS products. This vulnerability resides in the core web browser component responsible for processing and rendering web content across Apple's ecosystem. The affected versions include iOS prior to 10.2.1, Safari before 10.0.3, iCloud before 6.1.1, and iTunes before 12.5.5, indicating a widespread impact across Apple's software portfolio. The flaw specifically manifests in how WebKit handles certain crafted web content, creating opportunities for remote code execution or denial of service conditions that can compromise the entire system.
The technical nature of this vulnerability stems from improper memory handling within the WebKit component when processing maliciously constructed web pages. This memory corruption issue allows attackers to manipulate memory addresses and execute arbitrary code on vulnerable systems without requiring user interaction or authentication. The vulnerability operates at the browser engine level, making it particularly dangerous as it can be exploited through standard web browsing activities. Attackers can craft specific web pages that, when loaded in Safari or other affected applications, trigger the memory corruption, potentially leading to complete system compromise. This type of vulnerability aligns with CWE-119 which addresses "Improper Restriction of Operations within the Bounds of a Memory Buffer" and represents a classic buffer overflow scenario.
The operational impact of CVE-2017-2366 extends beyond simple application crashes to encompass full system compromise capabilities. When exploited, this vulnerability can enable attackers to execute malicious code with the privileges of the affected application, potentially leading to data theft, persistent backdoors, or complete system takeover. The denial of service aspect can also be leveraged to disrupt services by causing applications to crash repeatedly, affecting availability. Given that the vulnerability affects Safari and other Apple applications, it creates a significant threat surface that can be exploited through various attack vectors including malicious websites, phishing campaigns, or compromised web servers. This vulnerability demonstrates the critical importance of keeping software updated, as the exploitation can occur silently without user awareness.
Mitigation strategies for CVE-2017-2366 primarily focus on immediate software updates and system hardening measures. Apple released patches for all affected versions including iOS 10.2.1, Safari 10.0.3, iCloud 6.1.1, and iTunes 12.5.5, which address the underlying memory corruption issue. Organizations should implement rapid deployment of these security updates across all affected Apple devices within their networks. Network-based protections such as web proxies, content filtering, and intrusion detection systems can provide additional layers of defense by monitoring for suspicious web traffic patterns. The vulnerability also highlights the importance of application whitelisting and sandboxing techniques that can limit the damage scope even if exploitation occurs. From an ATT&CK framework perspective, this vulnerability maps to techniques involving exploitation of remote services and privilege escalation, emphasizing the need for comprehensive endpoint security measures that include regular vulnerability assessments and security monitoring to detect potential exploitation attempts.