CVE-2008-2806 in Firefox
Summary
by MITRE
Mozilla Firefox before 2.0.0.15 and SeaMonkey before 1.1.10 on Mac OS X allow remote attackers to bypass the Same Origin Policy and create arbitrary socket connections via a crafted Java applet, related to the Java Embedding Plugin (JEP) and Java LiveConnect.
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Analysis
by VulDB Data Team • 03/16/2021
This vulnerability represents a critical security flaw in Mozilla Firefox and SeaMonkey browsers on Mac OS X systems that existed prior to version 2.0.0.15 and 1.1.10 respectively. The issue stems from improper handling of Java applets within the browser's security model, specifically through the Java Embedding Plugin and Java LiveConnect functionality. The vulnerability allows remote attackers to circumvent the fundamental Same Origin Policy that protects web browsers from cross-site scripting attacks and unauthorized resource access. This flaw enables malicious actors to establish arbitrary socket connections from the victim's browser to any remote host, effectively breaking down the security boundaries that separate different web origins.
The technical implementation of this vulnerability exploits the interaction between the browser's JavaScript engine and the Java plugin infrastructure. When a malicious Java applet is loaded through a web page, the Java Embedding Plugin fails to properly enforce security restrictions that should prevent the applet from creating direct network connections outside the originating domain. The Java LiveConnect mechanism, which allows JavaScript to communicate with Java applets, becomes a vector for bypassing network security controls. This creates a pathway for attackers to perform network reconnaissance, establish command and control channels, or even exfiltrate data from the victim's system. The vulnerability specifically affects Mac OS X systems due to differences in how the operating system handles plugin security boundaries compared to other platforms.
The operational impact of this vulnerability is severe as it allows attackers to perform various malicious activities without user interaction beyond visiting a compromised website. An attacker could use this vulnerability to scan internal network resources, establish persistent connections to external servers, or even create backdoors for further exploitation. The ability to create arbitrary socket connections means that the vulnerability could be leveraged for data exfiltration, port scanning, or establishing covert communication channels. This represents a significant breach in the browser's security model since it undermines the core principle that web content should be isolated from each other and from the underlying operating system. The vulnerability essentially allows for a form of privilege escalation within the browser context, enabling network-level attacks that should normally be prevented by the browser's security architecture.
Organizations should immediately update their Firefox and SeaMonkey installations to versions 2.0.0.15 and 1.1.10 respectively to address this vulnerability. System administrators should also implement network monitoring to detect unusual outbound connections that might indicate exploitation attempts. The vulnerability aligns with CWE-284, which covers improper access control, and relates to ATT&CK technique T1071.004 for application layer protocol usage. Additional mitigations include disabling Java plugins when not required, implementing strict content security policies, and maintaining up-to-date network intrusion detection systems to monitor for suspicious network activity patterns that could indicate exploitation attempts.