CVE-2022-0986 in hestiacp
Summary
by MITRE • 03/16/2022
Reflected Cross-site Scripting (XSS) Vulnerability in GitHub repository hestiacp/hestiacp prior to 1.5.11.
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Analysis
by VulDB Data Team • 03/19/2022
The vulnerability identified as CVE-2022-0986 represents a reflected cross-site scripting flaw discovered in the Hestia Control Panel repository prior to version 1.5.11. This issue resides within the web application interface of the Hestia hosting control panel, which is widely used for managing web hosting services and server configurations. The vulnerability specifically affects the application's handling of user input in HTTP request parameters, creating an avenue for malicious actors to inject arbitrary JavaScript code into web pages viewed by other users. The flaw manifests when the application fails to properly sanitize or escape user-supplied data before incorporating it into dynamically generated web content, thereby enabling attackers to execute malicious scripts in the context of the victim's browser session.
This reflected XSS vulnerability operates by tricking users into clicking malicious links that contain crafted script payloads in URL parameters. When a victim clicks such a link, the malicious script is executed in their browser within the context of the vulnerable application, potentially allowing attackers to steal session cookies, perform unauthorized actions on behalf of users, or redirect victims to malicious websites. The vulnerability's impact is amplified by the fact that Hestia Control Panel is commonly deployed in shared hosting environments where multiple users may be accessing the same administrative interface. The flaw stems from inadequate input validation and output encoding mechanisms within the application's core web components, particularly affecting areas where user input is directly reflected back to the browser without proper sanitization. This type of vulnerability falls under CWE-79 which specifically addresses improper neutralization of input during web page generation, making it a classic example of how insufficient data validation can lead to severe security implications in web applications.
The operational impact of CVE-2022-0986 extends beyond simple script execution, as it can potentially allow attackers to escalate privileges within the control panel environment. Given that Hestia Control Panel provides administrative access to hosting services, a successful XSS attack could enable threat actors to access sensitive user data, modify hosting configurations, or even compromise entire server environments. The vulnerability is particularly concerning in shared hosting scenarios where multiple clients' data and services are managed through a single interface. Attackers could leverage this flaw to target specific users within a shared hosting environment or attempt to exploit it across multiple installations. The reflected nature of the vulnerability means that the attack payload is delivered via HTTP request parameters, making it easily exploitable through phishing campaigns or by embedding malicious links in compromised websites. This characteristic aligns with ATT&CK technique T1566 which covers social engineering attacks that deliver malicious payloads through web-based interfaces.
Mitigation strategies for CVE-2022-0986 primarily involve updating to version 1.5.11 or later of the Hestia Control Panel, which includes proper input sanitization and output encoding mechanisms. Organizations should also implement comprehensive input validation at multiple layers of the application architecture, ensuring that all user-supplied data is properly escaped before being rendered in web pages. The implementation of Content Security Policy headers can provide an additional layer of defense against XSS attacks by restricting the sources from which scripts can be loaded. Security teams should also conduct regular vulnerability assessments of web applications, particularly focusing on input validation and output encoding practices. The fix for this vulnerability typically involves implementing proper HTML escaping for all dynamic content and ensuring that user input is validated against whitelisted patterns before being processed. Organizations using Hestia Control Panel should also consider implementing web application firewalls and monitoring for suspicious request patterns that may indicate attempted exploitation of XSS vulnerabilities. The remediation process should include thorough testing to ensure that the fix does not introduce regressions in legitimate functionality while effectively neutralizing the reflected XSS threat vector.