CVE-2007-6700 in OpenBSD
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in cgi-bin/bgplg in the web interface for the BGPD daemon in OpenBSD 4.1 allows remote attackers to inject arbitrary web script or HTML via the cmd parameter.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 11/04/2024
The vulnerability identified as CVE-2007-6700 represents a critical cross-site scripting flaw within the web interface of OpenBSD 4.1's BGPD daemon component. This issue specifically affects the cgi-bin/bgplg script which serves as the web-based management interface for the Border Gateway Protocol daemon. The vulnerability stems from inadequate input validation and sanitization mechanisms that fail to properly filter user-supplied data before incorporating it into dynamic web content. The cmd parameter within the web interface accepts arbitrary input without proper sanitization, creating an exploitable vector for malicious actors to inject malicious scripts or HTML code directly into the web application's response.
This vulnerability operates under the Common Weakness Enumeration framework as CWE-79, which categorizes it as a "Cross-site Scripting" weakness. The flaw enables remote attackers to execute arbitrary web scripts in the context of a victim's browser session, potentially leading to session hijacking, credential theft, or unauthorized actions within the web application. The attack vector is particularly concerning as it does not require any authentication or privileged access to exploit, making it accessible to any remote user who can interact with the vulnerable web interface. The BGPD daemon interface typically provides administrative functions for network routing protocols, making this vulnerability particularly dangerous in network infrastructure environments where such interfaces may be exposed to untrusted networks.
The operational impact of this vulnerability extends beyond simple script injection, as it can be leveraged to perform more sophisticated attacks within the context of the web application. An attacker could craft malicious payloads that redirect users to phishing sites, steal session cookies, or manipulate the web interface to perform unauthorized administrative actions. The vulnerability affects the core web management interface of a critical network service, potentially allowing attackers to gain unauthorized access to network routing configurations or to disrupt network operations through malicious script execution. Given that the BGPD daemon is fundamental to internet routing protocols, exploitation of this vulnerability could have cascading effects on network infrastructure security and stability.
Mitigation strategies for CVE-2007-6700 should include immediate patching of the OpenBSD 4.1 system to a version that properly sanitizes input parameters before processing them within the web interface. Organizations should implement proper input validation and output encoding mechanisms to prevent the injection of malicious scripts into web responses. The principle of least privilege should be applied to ensure that the web interface is not accessible from untrusted networks, and network segmentation should be implemented to limit exposure. Additionally, regular security audits of web applications should be conducted to identify similar input validation vulnerabilities, and security monitoring should be enhanced to detect suspicious script injection attempts. The ATT&CK framework categorizes this vulnerability under T1059.007 for "Command and Scripting Interpreter: JavaScript' and T1566 for 'Phishing', highlighting the need for comprehensive defensive measures against both the exploitation vector and potential post-exploitation activities.