CVE-2011-1288 in Safari
Summary
by MITRE
WebKit, as used in Apple Safari before 5.0.6, 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-2011-07-20-1.
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Analysis
by VulDB Data Team • 01/19/2025
The vulnerability identified as CVE-2011-1288 represents a critical memory corruption flaw within WebKit's JavaScript engine that affected Apple Safari versions prior to 5.0.6. This vulnerability operates through a sophisticated attack vector that leverages crafted web content to manipulate memory structures within the browser's rendering engine, creating conditions that enable remote code execution or system instability. The flaw specifically resides in how WebKit processes certain JavaScript objects and memory allocations, particularly when handling complex object hierarchies and memory management operations.
The technical implementation of this vulnerability involves a heap-based buffer overflow or memory corruption issue that occurs during JavaScript object construction and manipulation. Attackers can craft malicious web pages containing specially constructed JavaScript code that triggers the vulnerable memory handling routines within WebKit's JavaScript engine. When the browser processes these crafted objects, the memory corruption manifests as unpredictable behavior that can be exploited to execute arbitrary code with the privileges of the browser process. This type of vulnerability falls under the CWE-125 weakness category, which describes out-of-bounds read conditions that can lead to memory corruption and potentially arbitrary code execution.
The operational impact of CVE-2011-1288 extends beyond simple exploitation capabilities to encompass significant security implications for end users and enterprise environments. The vulnerability's remote nature means that users can be compromised simply by visiting a malicious website, making it particularly dangerous in phishing campaigns or drive-by download scenarios. The memory corruption can manifest as application crashes, browser instability, or full system compromise depending on the exploitation method employed by threat actors. Security researchers have noted that this vulnerability shares characteristics with other WebKit memory corruption issues but operates through distinct code paths, making it particularly challenging to detect and mitigate through traditional signature-based approaches.
Mitigation strategies for CVE-2011-1288 require immediate patch deployment and comprehensive browser security measures. Apple's release of Safari 5.0.6 addressed this vulnerability through memory management improvements and enhanced input validation within the JavaScript engine. Organizations should implement multiple layers of protection including browser updates, content filtering solutions, and user education programs to reduce exposure risk. The vulnerability's characteristics align with ATT&CK technique T1203, which describes exploitation of software vulnerabilities for privilege escalation, and T1190, which covers exploitation of remote services through web-based attacks. Network administrators should consider implementing web application firewalls and monitoring for suspicious JavaScript behavior patterns to detect potential exploitation attempts.
The broader implications of this vulnerability highlight the critical importance of regular security updates and the inherent risks associated with complex browser rendering engines. WebKit's widespread adoption across multiple platforms and browsers meant that this vulnerability could potentially affect numerous applications beyond just Safari, emphasizing the need for coordinated vulnerability disclosure and rapid response protocols. The memory corruption nature of the flaw demonstrates how seemingly minor issues in core browser components can lead to significant security breaches, reinforcing the principle that browser security is fundamental to overall system security posture and aligning with security frameworks that emphasize defense-in-depth strategies for protecting against advanced persistent threats.