CVE-2015-8010 in Icinga
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Classic-UI with the CSV export link and pagination feature in Icinga before 1.14 allows remote attackers to inject arbitrary web script or HTML via the query string to cgi-bin/status.cgi.
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Analysis
by VulDB Data Team • 11/22/2022
The vulnerability identified as CVE-2015-8010 represents a critical cross-site scripting flaw within the Classic-UI component of Icinga monitoring software prior to version 1.14. This vulnerability specifically affects the CSV export link and pagination functionality, creating a pathway for remote attackers to execute malicious web scripts or HTML code within the context of authenticated user sessions. The flaw exists in the cgi-bin/status.cgi script which processes query string parameters without adequate input sanitization or output encoding, making it susceptible to injection attacks that can persist across user interactions.
The technical implementation of this vulnerability stems from insufficient validation of user-supplied input within the query string parameters processed by the status.cgi script. When users navigate through paginated views or attempt to export data via CSV format, the application fails to properly sanitize or encode the input values before incorporating them into dynamic web content. This lack of proper input validation creates an environment where malicious actors can inject crafted payloads that execute in the browser context of legitimate users. The vulnerability is classified as CWE-79 - Improper Neutralization of Input During Web Page Generation, which directly maps to the standard definition of cross-site scripting vulnerabilities where user-controllable data is improperly handled during web page construction.
Operational impact of this vulnerability extends beyond simple script injection, as it enables attackers to perform a range of malicious activities including session hijacking, credential theft, and data exfiltration. An attacker who successfully exploits this vulnerability can manipulate the pagination controls and CSV export features to inject malicious JavaScript code that executes within the victim's browser session. This could allow unauthorized access to monitoring data, potentially exposing sensitive infrastructure information, or enable the attacker to perform actions on behalf of authenticated users. The vulnerability particularly affects environments where Icinga is used for critical infrastructure monitoring, as it could provide attackers with a foothold to compromise monitoring systems and gain visibility into network operations. According to ATT&CK framework, this vulnerability maps to T1059.007 - Command and Scripting Interpreter: JavaScript, and T1566.001 - Credential Access: Phishing, as it enables the execution of malicious JavaScript code and potential credential harvesting through session manipulation.
Mitigation strategies for CVE-2015-8010 should prioritize immediate patching of affected Icinga installations to version 1.14 or later, where the vulnerability has been addressed through proper input validation and output encoding mechanisms. Organizations should implement comprehensive input sanitization measures that validate and sanitize all user-supplied parameters before they are processed or rendered in web responses. Network segmentation and access controls should be strengthened to limit exposure of Icinga interfaces to untrusted networks, while regular security assessments should be conducted to identify similar vulnerabilities in other monitoring systems. Additionally, implementing Content Security Policy headers can provide an additional layer of protection against XSS attacks by restricting the sources from which scripts can be loaded and executed within the browser context. The vulnerability demonstrates the critical importance of proper input validation in web applications and highlights the need for comprehensive security testing throughout the software development lifecycle to prevent similar issues from emerging in monitoring and operational support systems.