CVE-2012-0891 in Puppet Dashboard
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Puppet Dashboard 1.0 before 1.2.5 and Enterprise 1.0 before 1.2.5 and 2.x before 2.0.1 allow remote attackers to inject arbitrary web script or HTML via unspecified fields.
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Analysis
by VulDB Data Team • 05/08/2026
The vulnerability identified as CVE-2012-0891 represents a critical cross-site scripting weakness affecting Puppet Dashboard versions prior to 1.2.5 and Puppet Enterprise versions before 1.2.5 and 2.0.1. This vulnerability resides in the web interface of Puppet's configuration management platform, which is widely used for automating infrastructure management and deployment processes across enterprise environments. The flaw stems from inadequate input validation and output sanitization mechanisms within the application's user interface components, creating exploitable entry points for malicious actors seeking to compromise the system's integrity and confidentiality.
The technical implementation of this vulnerability allows remote attackers to inject arbitrary web scripts or HTML content through unspecified fields within the Puppet Dashboard interface. This type of vulnerability falls under the Common Weakness Enumeration category CWE-79, which specifically addresses Cross-Site Scripting flaws. The vulnerability's impact extends beyond simple script injection as it can potentially enable attackers to execute malicious code in the context of the victim's browser, leading to session hijacking, data theft, or further exploitation of the compromised system. The unspecified nature of the vulnerable fields suggests that multiple input vectors within the application's web interface may be susceptible to this attack vector, making the scope of potential exploitation broader than initially apparent.
The operational impact of this vulnerability is significant for organizations relying on Puppet Dashboard for infrastructure automation, as it creates opportunities for attackers to compromise the management interface itself. When an attacker successfully exploits this vulnerability, they can potentially access sensitive configuration data, manipulate deployment workflows, or establish persistent access points within the organization's infrastructure management system. This threat is particularly concerning because Puppet Dashboard serves as a central point for managing and monitoring enterprise infrastructure, making it a valuable target for attackers seeking to gain deeper access to organizational resources. The vulnerability's presence in both the community dashboard and enterprise versions indicates that the flaw affects the core application architecture rather than being isolated to specific components or features.
Organizations should implement immediate mitigation strategies including upgrading to patched versions of Puppet Dashboard and Enterprise releases, specifically versions 1.2.5 and 2.0.1 respectively, which contain the necessary fixes for this vulnerability. Additionally, implementing proper input validation and output encoding measures within the application's web interface can provide additional layers of protection against similar vulnerabilities. Network segmentation and access controls should be reinforced around the Puppet management systems to limit potential attack vectors. The vulnerability's classification under ATT&CK technique T1566.001 highlights its potential for initial access through web-based attacks, emphasizing the need for comprehensive security measures including regular security assessments and monitoring of web application traffic for suspicious activity. Security teams should also consider implementing web application firewalls and content security policies to detect and prevent exploitation attempts targeting this vulnerability.