CVE-2010-4586 in Web Browser
Summary
by MITRE
The default configuration of Opera before 11.00 enables WebSockets functionality, which has unspecified impact and remote attack vectors, possibly a related issue to CVE-2010-4508.
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Analysis
by VulDB Data Team • 10/07/2021
The vulnerability described in CVE-2010-4586 relates to the default configuration of Opera web browser versions prior to 11.00, where WebSockets functionality was enabled by default without proper security considerations. This represents a significant security flaw that could potentially allow remote attackers to exploit unspecified attack vectors through the WebSocket protocol implementation. The vulnerability is particularly concerning because WebSockets provide a full-duplex communication channel between client and server, which can be leveraged for various malicious activities when not properly secured. The unspecified impact suggests that the security implications were not fully understood at the time of disclosure, but the potential for remote code execution or data manipulation through WebSocket connections was significant. This vulnerability is particularly relevant in the context of modern web security practices where WebSocket connections can bypass traditional HTTP security mechanisms and create new attack surfaces that were not adequately considered in older browser implementations.
The technical flaw in this vulnerability stems from the default enabling of WebSocket functionality without proper security controls or restrictions. WebSockets operate at the application layer and can establish persistent connections that allow for real-time communication between browsers and servers, which creates opportunities for attackers to exploit the protocol in ways that traditional HTTP security measures might not prevent. When WebSockets are enabled by default, they can potentially be used to bypass security controls such as cross-origin resource sharing restrictions, as WebSocket connections are not subject to the same origin policy enforcement that applies to regular HTTP requests. The vulnerability becomes particularly dangerous when combined with other related issues such as CVE-2010-4508, which suggests that the WebSocket implementation may have had additional security weaknesses that could be exploited in combination. This type of vulnerability falls under the category of insufficient security configuration as outlined in CWE-707, where default security settings are not properly hardened, and also relates to CWE-94, which covers the execution of arbitrary code through improper input handling.
The operational impact of this vulnerability extends beyond simple remote code execution to encompass a broader range of security concerns that affect web application security. Attackers could potentially leverage the enabled WebSocket functionality to perform man-in-the-middle attacks, intercept sensitive communications, or establish persistent backdoors through the WebSocket connections. The remote attack vectors available through this vulnerability mean that an attacker could exploit the flaw from anywhere on the internet without requiring physical access to the target system. This vulnerability also represents a concern for enterprise environments where Opera browsers might be used in corporate networks, as it could allow attackers to establish covert communication channels that bypass traditional network monitoring and security controls. The lack of proper WebSocket security controls in the default configuration means that organizations using older Opera versions were potentially exposing their networks to attacks that could be used for data exfiltration, command and control communications, or other malicious activities that leverage the persistent nature of WebSocket connections.
The mitigation strategies for this vulnerability primarily involve updating to Opera version 11.00 or later, which would disable WebSocket functionality by default or implement proper security controls. Organizations should also consider implementing network-level controls such as firewalls or proxies that can monitor and restrict WebSocket traffic to prevent unauthorized access. Additionally, security administrators should review and harden WebSocket configurations in any applications that require WebSocket functionality, ensuring that proper authentication, authorization, and encryption mechanisms are in place. The vulnerability demonstrates the importance of proper security configuration management and the need for organizations to regularly update their software to address known security flaws. From an ATT&CK framework perspective, this vulnerability could be mapped to techniques such as T1071.004 for application layer protocol usage and T1566 for social engineering, as attackers might use WebSocket connections to establish persistent access or exfiltrate data through the browser. The vulnerability also highlights the importance of the principle of least privilege in web browser security, where default configurations should not enable potentially dangerous features without explicit user consent or administrative approval.