CVE-2015-5808 in iTunes
Summary
by MITRE
WebKit, as used in Apple iTunes before 12.3, allows man-in-the-middle attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via vectors related to iTunes Store browsing, a different vulnerability than other WebKit CVEs listed in APPLE-SA-2015-09-16-3.
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Analysis
by VulDB Data Team • 11/22/2024
The vulnerability identified as CVE-2015-5808 represents a critical security flaw within WebKit engine components integrated into Apple iTunes version 12.2 and earlier. This issue specifically affects the iTunes Store browsing functionality and demonstrates how web-based vulnerabilities can propagate through desktop applications to create significant security risks. The vulnerability enables man-in-the-middle attackers to exploit memory corruption issues that can result in arbitrary code execution or denial of service conditions, making it particularly dangerous for users who frequently access the iTunes Store for media purchases or downloads. The flaw operates through vectors related to web content rendering within the iTunes application environment, creating a pathway for attackers to compromise system integrity.
The technical implementation of this vulnerability stems from improper handling of web content during iTunes Store browsing operations within the WebKit rendering engine. When users navigate the iTunes Store interface, the application processes web-based content that includes HTML, JavaScript, and other web technologies. The memory corruption occurs during the parsing and execution of this web content, specifically when the WebKit engine fails to properly validate or sanitize input data from web sources. This memory corruption can manifest as buffer overflows, use-after-free conditions, or other memory management errors that allow attackers to manipulate the application's execution flow. The vulnerability's classification as a memory corruption issue aligns with CWE-122, which covers buffer overflow conditions, and CWE-476, which addresses null pointer dereferences that can lead to memory corruption scenarios.
The operational impact of CVE-2015-5808 extends beyond simple application instability to potentially enable full system compromise. When successful, this vulnerability can allow attackers to execute arbitrary code with the privileges of the iTunes process, which typically runs with elevated permissions on modern operating systems. This creates a potential escalation path that could lead to complete system compromise, particularly when users have administrative privileges. The denial of service aspect of the vulnerability can also be leveraged to disrupt legitimate user activities by causing application crashes or freezes during critical iTunes Store operations. The man-in-the-middle attack vector implies that attackers can exploit this vulnerability in network environments where they can intercept or manipulate traffic between iTunes and Apple's servers, making it particularly concerning for users on public or untrusted networks.
Security professionals should note that this vulnerability differs from other WebKit CVEs referenced in APPLE-SA-2015-09-16-3, indicating that it represents a distinct code path or implementation issue within the WebKit engine. The attack surface is particularly concerning because iTunes Store browsing is a common user activity that occurs regularly, increasing the likelihood of exploitation. The vulnerability's impact on memory management within the WebKit engine highlights the importance of proper input validation and memory handling practices in web rendering components. Organizations and individuals should prioritize updating to iTunes version 12.3 or later, which contains the necessary patches to address this memory corruption vulnerability. Additionally, network monitoring and intrusion detection systems should be configured to identify potential exploitation attempts targeting this specific vulnerability, as the attack patterns may differ from other WebKit-based exploits.
The mitigation strategies for CVE-2015-5808 primarily focus on immediate software updates to address the underlying WebKit memory corruption issues. Users should upgrade to iTunes 12.3 or newer versions, which include patches specifically designed to correct the memory handling errors in the WebKit engine. System administrators should implement automated update mechanisms to ensure all iTunes installations remain current with security patches. Network administrators should consider implementing additional security controls such as web application firewalls or content filtering solutions to reduce the risk of exploitation. The vulnerability's nature as a memory corruption issue also suggests that standard security measures like address space layout randomization and data execution prevention should be enabled to make exploitation more difficult. Organizations should also conduct security awareness training for users to recognize potential man-in-the-middle attack scenarios and avoid using iTunes on untrusted networks. This vulnerability serves as a reminder of the critical importance of maintaining up-to-date software and understanding how web-based components in desktop applications can create security exposure points.