CVE-2007-2408 in Safari
Summary
by MITRE
WebKit in Apple Safari 3 Beta before Update 3.0.3 does not properly recognize an unchecked "Enable Java" setting, which allows remote attackers to execute Java applets via a crafted web page.
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Analysis
by VulDB Data Team • 07/23/2019
The vulnerability described in CVE-2007-2408 represents a critical security flaw in Apple Safari 3 Beta versions prior to Update 3.0.3, specifically within the WebKit rendering engine that powers the browser's web content processing capabilities. This issue stems from a failure in the browser's security model to properly validate user preferences related to Java plugin execution, creating an exploitable condition that could be leveraged by remote attackers to execute arbitrary Java applets on vulnerable systems.
The technical flaw manifests in the WebKit component's improper handling of the "Enable Java" user setting, which should serve as a security control to prevent automatic execution of Java content. When this setting is unchecked, the browser should refuse to load or execute Java applets, but the vulnerability allows attackers to bypass this protection mechanism through carefully crafted web pages that can force Java execution regardless of the user's explicit preferences. This represents a classic case of insecure default configuration where the browser fails to respect user security choices, creating a dangerous privilege escalation path.
The operational impact of this vulnerability extends beyond simple exploitation as it affects the fundamental security model of the Safari browser and potentially compromises the entire system. Java applets, when executed, can perform a wide range of operations including file system access, network communications, and system-level interactions that could lead to complete system compromise. Attackers could craft malicious web pages that appear legitimate but contain embedded Java applets designed to exploit other vulnerabilities, perform data exfiltration, or establish persistent access to the compromised system. The vulnerability particularly affects users who may have disabled Java for security reasons but are still vulnerable to attack.
This vulnerability aligns with CWE-693, which addresses protection mechanism failures where security controls are not properly enforced, and represents a clear violation of the principle of least privilege in web browser security architecture. From an ATT&CK framework perspective, this vulnerability maps to techniques involving exploitation of browser vulnerabilities and privilege escalation through malicious code execution, specifically targeting the execution of arbitrary code through web-based attack vectors. The attack surface is particularly concerning as it requires no user interaction beyond visiting a malicious website, making it a prime candidate for drive-by download attacks and automated exploitation campaigns.
The recommended mitigations include immediate updating of Safari to version 3.0.3 or later, which contains the necessary patches to properly enforce the Java enablement setting. Users should also consider disabling Java plugins entirely when not actively required for specific applications, as this provides an additional layer of defense. System administrators should implement network-based controls to block Java applet execution and consider deploying web application firewalls that can detect and prevent exploitation attempts. Additionally, regular security assessments should verify that browser security settings are properly configured and that users are educated about the risks associated with enabling potentially dangerous plugins. The vulnerability demonstrates the critical importance of maintaining up-to-date software and respecting user security preferences in web browser implementations.