CVE-2012-0620 in iOS
Summary
by MITRE
WebKit, as used in Apple iOS before 5.1 and iTunes before 10.6, 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-2012-03-07-1 and APPLE-SA-2012-03-07-2.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 01/11/2025
The vulnerability identified as CVE-2012-0620 represents a critical memory corruption flaw within WebKit engine components that power Apple's mobile operating systems and media software. This issue affects Apple iOS versions prior to 5.1 and iTunes versions before 10.6, creating a significant attack surface that malicious actors could exploit to gain unauthorized system access or disrupt normal operations. The vulnerability stems from improper handling of memory structures during web page rendering processes, specifically when processing malformed or crafted web content that triggers unexpected behavior in the underlying WebKit rendering engine.
The technical implementation of this vulnerability involves a memory corruption condition that occurs when WebKit processes specially crafted web content containing malformed data structures or unexpected input sequences. This flaw manifests as a buffer overflow or heap corruption scenario where attacker-controlled data can overwrite critical memory regions, potentially leading to arbitrary code execution or application crashes. The vulnerability operates at the intersection of multiple security domains including browser security, memory management, and input validation, making it particularly dangerous as it can be triggered through standard web browsing activities without requiring any special privileges or user interaction beyond visiting a malicious website.
From an operational perspective, this vulnerability presents a substantial risk to users of affected Apple products as it enables remote code execution capabilities that could allow attackers to compromise devices entirely. The impact extends beyond simple denial of service scenarios to include potential data theft, system takeover, and persistent backdoor installation. Attackers could leverage this vulnerability through drive-by downloads, malicious websites, or compromised web applications, making it particularly dangerous in environments where users regularly browse the internet. The vulnerability's classification aligns with CWE-121, which describes heap-based buffer overflow conditions, and maps to ATT&CK technique T1059.007 for command and script interpreter execution, as successful exploitation could enable attackers to execute arbitrary commands on compromised systems.
Mitigation strategies for CVE-2012-0620 primarily focus on immediate system updates and patches provided by Apple to address the underlying memory corruption issues. Organizations should prioritize updating affected iOS devices to version 5.1 or later and iTunes installations to version 10.6 or higher to eliminate exposure to this vulnerability. Additionally, network-level protections including web application firewalls and content filtering systems can help reduce the risk of exploitation by blocking access to known malicious domains. Security monitoring should include detection of unusual memory access patterns and application crashes that might indicate exploitation attempts, while user education programs should emphasize the importance of avoiding untrusted websites and maintaining current software versions. The vulnerability's nature as a memory corruption issue also necessitates regular system integrity checks and application sandboxing measures to limit potential damage from successful exploitation attempts.