CVE-2005-0053 in Internet Explorer
Summary
by MITRE
Internet Explorer 5.01, 5.5, and 6 allows remote attackers to execute arbitrary code via drag and drop events, aka the "Drag-and-Drop Vulnerability."
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Analysis
by VulDB Data Team • 01/03/2025
The CVE-2005-0053 vulnerability represents a critical security flaw in Microsoft Internet Explorer versions 5.01, 5.5, and 6.0 that enables remote attackers to execute arbitrary code through malicious drag and drop operations. This vulnerability stems from insufficient input validation and improper handling of user interactions within the browser's event processing system. The flaw specifically affects the browser's implementation of drag and drop functionality, which is a standard web browser feature that allows users to move elements between different locations through mouse interactions. When a user encounters a malicious web page containing specially crafted drag and drop events, the browser fails to properly validate the data being manipulated, creating an opportunity for code execution. This vulnerability falls under the category of input validation flaws and is classified as a buffer overflow or memory corruption issue within the browser's rendering engine. The security implications are severe as this allows attackers to execute malicious code with the privileges of the logged-in user, potentially leading to complete system compromise. The vulnerability exists due to the lack of proper bounds checking when processing drag and drop operations, particularly when handling external data sources or maliciously crafted HTML content that triggers these events. Attackers can leverage this weakness by hosting malicious web pages that contain JavaScript code designed to exploit the drag and drop functionality, causing the browser to execute unintended commands.
The technical exploitation of this vulnerability occurs when Internet Explorer processes drag and drop events without adequate sanitization of input data. When a user interacts with a malicious page, the browser's event handlers receive data that is not properly validated or filtered, leading to memory corruption. This memory corruption can be manipulated to overwrite critical memory locations, allowing attackers to inject and execute their own code within the browser process. The attack vector relies on social engineering techniques where users must navigate to malicious websites, making this a user-initiated attack that requires user interaction. The vulnerability is particularly dangerous because it operates at the browser level, bypassing many traditional security controls that operate at the operating system level. This type of vulnerability is categorized under CWE-121, which describes heap-based buffer overflow conditions, and aligns with ATT&CK technique T1059.007 for command and scripting interpreter. The flaw demonstrates how seemingly benign user interaction features can become attack vectors when proper security measures are not implemented in the browser's event handling mechanisms.
The operational impact of CVE-2005-0053 extends beyond simple code execution to encompass full system compromise capabilities. When successfully exploited, attackers can gain complete control over affected systems, potentially leading to data theft, system infiltration, or deployment of additional malware. The vulnerability affects a wide range of Internet Explorer versions that were prevalent during the mid-2000s, making it particularly dangerous as many organizations had legacy systems running these older browser versions. The attack requires minimal sophistication from threat actors, as the exploitation process relies on standard web browser functionality rather than complex zero-day techniques. Organizations using these vulnerable versions face significant risk exposure, especially in enterprise environments where legacy systems are common. The vulnerability also impacts the broader web ecosystem by potentially allowing attackers to establish persistent backdoors or deploy additional malicious payloads. Security professionals noted that the vulnerability could be combined with other exploits to create more sophisticated attack chains, making it a valuable target for cybercriminals. The impact is particularly severe in environments where users frequently browse untrusted websites or where automated browser updates are not properly configured.
Mitigation strategies for CVE-2005-0053 focus primarily on immediate browser updates and security configuration changes. Microsoft released patches for this vulnerability through their regular security updates, and organizations should ensure all systems are updated with the latest security patches. Browser security settings can be adjusted to disable drag and drop functionality or restrict external data sources, though this may impact legitimate website functionality. Network-level controls such as web application firewalls and content filtering systems can help detect and block malicious drag and drop content. Organizations should implement comprehensive patch management processes to ensure all vulnerable systems receive updates promptly. The vulnerability highlights the importance of keeping browser software current and demonstrates how legacy browser versions pose significant security risks. Security awareness training for users can help reduce the likelihood of successful exploitation by educating users about the dangers of visiting untrusted websites. Additionally, implementing security policies that restrict user permissions and limit the execution of arbitrary code can provide additional layers of protection. The vulnerability serves as a reminder of the critical need for continuous security monitoring and the importance of maintaining up-to-date security controls across all system components. Regular security assessments and vulnerability scanning should include checks for outdated browser versions to prevent exploitation of known vulnerabilities like CVE-2005-0053.