CVE-2011-2817 in iTunes
Summary
by MITRE
WebKit, as used in Apple iTunes before 10.5, 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 CVEs listed in APPLE-SA-2011-10-11-1.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 01/19/2025
The vulnerability identified as CVE-2011-2817 represents a critical security flaw in Apple iTunes versions prior to 10.5, specifically within the WebKit rendering engine component. This vulnerability manifests during iTunes Store browsing operations and creates a significant attack surface for man-in-the-middle adversaries who can exploit the flaw to execute arbitrary code or cause application crashes. The issue is distinct from other vulnerabilities referenced in APPLE-SA-2011-10-11-1, indicating a separate code path or implementation weakness within the WebKit framework that Apple incorporated into its media management software.
The technical nature of this vulnerability stems from memory corruption issues that occur when WebKit processes certain web content or requests during iTunes Store interactions. Attackers leveraging this weakness can manipulate the memory layout of the iTunes application, potentially leading to code execution with the privileges of the running process. This memory corruption vulnerability typically arises from improper input validation or buffer handling within the WebKit engine's handling of web requests or responses from iTunes Store servers. The flaw likely involves improper bounds checking or use-after-free conditions that allow malicious actors to inject and execute unauthorized code within the iTunes application context.
The operational impact of this vulnerability extends beyond simple application instability, as it provides attackers with potential persistence mechanisms within the iTunes environment. When exploited successfully, the vulnerability can lead to complete system compromise or denial of service conditions that prevent legitimate users from accessing iTunes Store functionality. The man-in-the-middle attack vector suggests that the vulnerability can be exploited in network interception scenarios where attackers can modify traffic between iTunes and Apple's servers. This creates a particularly dangerous threat model for users who rely on iTunes for media management and purchasing activities, as the compromise could extend to financial transactions and personal data exposure.
From a cybersecurity framework perspective, this vulnerability maps to CWE-125, which describes out-of-bounds read conditions, and potentially CWE-787, which covers out-of-bounds write operations. The attack pattern aligns with MITRE ATT&CK technique T1059.007 for command and scripting interpreter, where adversaries may leverage code execution capabilities to establish persistent access. The vulnerability also demonstrates characteristics of T1566.001 for credential access through man-in-the-middle attacks, as the exploitation could potentially intercept authentication tokens or other sensitive information during iTunes Store browsing sessions. Organizations should consider implementing network monitoring solutions to detect anomalous traffic patterns that might indicate exploitation attempts, while users should ensure all iTunes installations are updated to version 10.5 or later to mitigate this risk.
Mitigation strategies for CVE-2011-2817 require immediate patching of affected iTunes installations to version 10.5 or higher, where Apple addressed the underlying WebKit memory corruption issues. Network administrators should implement traffic inspection measures to monitor for suspicious iTunes Store communications that might indicate exploitation attempts. Additionally, users should be educated about the risks of connecting to untrusted networks where man-in-the-middle attacks could occur, particularly when accessing iTunes Store functionality. The vulnerability highlights the importance of maintaining up-to-date software versions and the critical need for organizations to establish robust patch management processes that can quickly address such security flaws in widely-used applications like iTunes. Security teams should also consider implementing application whitelisting policies that restrict iTunes execution to trusted environments and monitor for unusual application behavior that might indicate exploitation attempts.