CVE-2015-0850 in FusionForge
Summary
by MITRE
The Git plugin for FusionForge before 6.0rc4 allows remote attackers to execute arbitrary code via an unspecified parameter when creating a secondary Git repository.
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Analysis
by VulDB Data Team • 12/02/2024
The vulnerability identified as CVE-2015-0850 affects the Git plugin within FusionForge version 6.0rc4 and earlier, presenting a critical remote code execution risk that could compromise entire development environments. This flaw exists in the parameter handling mechanism when creating secondary Git repositories, allowing malicious actors to inject and execute arbitrary code on the target system. The vulnerability stems from insufficient input validation and sanitization within the plugin's repository creation functionality, creating an attack surface that remote adversaries can exploit without authentication. The affected system architecture processes user-supplied parameters during repository initialization, where improper handling of these inputs enables command injection attacks that can escalate privileges and potentially lead to complete system compromise. This vulnerability directly impacts the integrity and availability of source code management systems that rely on FusionForge's Git integration.
The technical implementation of this vulnerability involves a classic command injection flaw where user-controllable parameters are directly incorporated into system commands without proper sanitization or escaping mechanisms. When administrators or users create secondary Git repositories through the FusionForge interface, the plugin fails to properly validate or escape input values, allowing attackers to inject malicious commands that execute within the context of the web application's privileges. The attack vector typically involves manipulating repository names, paths, or configuration parameters to inject shell commands that get executed by the underlying system. This type of vulnerability maps directly to CWE-77 and CWE-94 within the Common Weakness Enumeration framework, representing command injection and code injection vulnerabilities respectively. The flaw demonstrates poor input validation practices and inadequate security controls in the web application's parameter handling, creating a persistent threat that can be exploited repeatedly until patched.
The operational impact of CVE-2015-0850 extends beyond immediate code execution capabilities to encompass complete system compromise and data exfiltration risks. Attackers exploiting this vulnerability can gain unauthorized access to source code repositories, potentially accessing sensitive intellectual property, configuration files, and development artifacts. The remote nature of the attack means that adversaries can exploit this flaw from anywhere on the internet, making it particularly dangerous for organizations that expose their FusionForge instances to public networks. Additionally, the vulnerability can be leveraged to establish persistent backdoors, modify repository contents, or disrupt development workflows through repository corruption. Organizations using FusionForge for critical software development projects face significant business continuity risks, as successful exploitation can lead to code tampering, intellectual property theft, and regulatory compliance violations. The vulnerability also enables attackers to potentially pivot to other systems within the network, especially if the FusionForge instance shares resources with other development tools or databases.
Mitigation strategies for CVE-2015-0850 require immediate patching of the FusionForge Git plugin to version 6.0rc4 or later, which contains the necessary input validation fixes. Organizations should implement network segmentation to limit access to FusionForge instances, particularly restricting external exposure through firewalls and access controls. Input validation mechanisms should be strengthened to sanitize all user-supplied parameters before processing, implementing proper escaping and encoding techniques to prevent command injection attacks. Security monitoring should be enhanced to detect unusual repository creation patterns or parameter modifications that might indicate exploitation attempts. Additionally, organizations should conduct comprehensive vulnerability assessments of their development infrastructure to identify similar input validation flaws in other applications. The remediation process should include reviewing and updating security configurations, implementing least privilege principles for repository creation operations, and establishing incident response procedures for potential exploitation attempts. These measures align with the ATT&CK framework's mitigation strategies for command and control activities, focusing on input validation and access restriction controls to prevent exploitation of similar vulnerabilities in development environments.