CVE-2015-5792 in iTunes
Summary
by MITRE
WebKit, as used in Apple iOS before 9 and iTunes before 12.3, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site, a different vulnerability than other WebKit CVEs listed in APPLE-SA-2015-09-16-1 and APPLE-SA-2015-09-16-3.
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Analysis
by VulDB Data Team • 06/18/2022
The vulnerability identified as CVE-2015-5792 represents a critical memory corruption flaw within WebKit engine components that power Apple iOS versions prior to 9 and iTunes versions before 12.3. This vulnerability resides in the browser rendering engine that processes web content, making it a prime target for remote exploitation. The flaw manifests when WebKit encounters specifically crafted web content that triggers undefined behavior in memory management operations, leading to potential arbitrary code execution or system instability. The vulnerability is particularly concerning because it operates through standard web browsing channels, requiring no special privileges or user interaction beyond visiting a malicious website, making it highly accessible to threat actors.
The technical exploitation of this vulnerability occurs through memory corruption mechanisms that can be triggered by malformed web content. Attackers can craft malicious websites containing specially constructed HTML, JavaScript, or multimedia elements that cause WebKit to improperly handle memory allocation and deallocation. This memory corruption typically involves buffer overflows, use-after-free conditions, or other heap manipulation techniques that allow attackers to overwrite critical memory locations. The flaw is categorized under CWE-119 as a weakness related to memory safety issues, specifically involving the improper handling of memory operations within the web rendering engine. The vulnerability's classification aligns with common attack patterns documented in the ATT&CK framework under T1203 - Exploitation for Client Execution, where adversaries leverage browser vulnerabilities to execute malicious code on target systems.
The operational impact of CVE-2015-5792 extends beyond simple denial of service conditions to encompass full system compromise capabilities. When successfully exploited, the vulnerability can enable attackers to execute arbitrary code with the privileges of the affected application, potentially leading to complete system compromise. The memory corruption can cause applications to crash unpredictably, but more critically, it can be leveraged to inject and execute malicious payloads that persist across system sessions. This vulnerability affects not only mobile devices running iOS but also desktop systems running iTunes, creating a wide attack surface that spans multiple Apple product lines. The impact is particularly severe in enterprise environments where users may unknowingly visit compromised websites, potentially leading to data breaches, credential theft, or further lateral movement within networks.
Mitigation strategies for CVE-2015-5792 primarily focus on immediate remediation through official software updates from Apple. Users should promptly install iOS 9.0 or later versions and iTunes 12.3 or later to address the vulnerability. Network administrators should implement web content filtering solutions to block access to known malicious domains and consider deploying intrusion prevention systems that can detect and block exploitation attempts. The vulnerability demonstrates the importance of regular patch management and security updates, as it represents a typical zero-day exploit that becomes immediately actionable once public information becomes available. Organizations should also consider implementing browser hardening measures, such as disabling unnecessary browser features, restricting JavaScript execution, and maintaining strict access controls to prevent unauthorized web browsing activities that could expose systems to this vulnerability. Additionally, security monitoring should include detection of unusual memory access patterns and application crash reports that may indicate exploitation attempts.