CVE-2009-2967 in Buildbot
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Buildbot 0.7.6 through 0.7.11p2 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors, different vulnerabilities than CVE-2009-2959.
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Analysis
by VulDB Data Team • 11/22/2018
The vulnerability identified as CVE-2009-2967 represents a critical security flaw in Buildbot versions ranging from 0.7.6 through 0.7.11p2, specifically manifesting as multiple cross-site scripting vulnerabilities that enable remote attackers to execute arbitrary web scripts or HTML code within the context of affected systems. This vulnerability falls under the category of input validation flaws and specifically aligns with CWE-79 which defines cross-site scripting as a weakness where an application fails to properly sanitize user input before rendering it in web pages. Buildbot, as a continuous integration system, processes and displays various user inputs including build status information, test results, and configuration parameters, creating multiple potential attack vectors for malicious actors to exploit.
The technical nature of this vulnerability stems from insufficient sanitization of user-supplied data within the Buildbot web interface, allowing attackers to inject malicious scripts that execute in the browsers of other users who view the affected web pages. These XSS vulnerabilities operate through unspecified vectors, indicating that multiple entry points within the application's web interface are susceptible to injection attacks, making the exploitation surface broader than typical single-point vulnerabilities. The vulnerability differs from CVE-2009-2959, suggesting that while both relate to XSS issues, they affect different components or code paths within the Buildbot framework, requiring separate remediation approaches.
The operational impact of CVE-2009-2967 extends beyond simple data theft or defacement, as successful exploitation could enable attackers to perform actions on behalf of authenticated users, potentially compromising the entire continuous integration environment. Attackers could leverage these vulnerabilities to steal session cookies, redirect users to malicious sites, modify build results, or even gain access to sensitive configuration information that could lead to further system compromise. The affected versions of Buildbot were widely used in enterprise environments for automated testing and deployment processes, making the potential attack surface significant for organizations relying on these systems for critical software development workflows.
Mitigation strategies for CVE-2009-2967 should focus on implementing comprehensive input sanitization and output encoding mechanisms throughout the Buildbot web interface, following established security practices such as those outlined in the OWASP Top Ten and the ATT&CK framework's defensive techniques for web application security. Organizations should immediately upgrade to patched versions of Buildbot, as the vulnerability affects multiple intermediate releases, and implement proper content security policies to limit script execution capabilities. Additionally, network segmentation and monitoring of web traffic can help detect and prevent exploitation attempts, while regular security assessments should verify that all user inputs are properly validated and sanitized before being rendered in web contexts, ensuring compliance with industry standards for secure coding practices.