CVE-2018-10318 in Frog
Summary
by MITRE
Frog CMS 0.9.5 has XSS via the admin/?/page/edit page[keywords] parameter, aka Edit Page Metadata.
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Analysis
by VulDB Data Team • 01/30/2020
The vulnerability CVE-2018-10318 represents a cross-site scripting flaw discovered in Frog CMS version 0.9.5, specifically within the administrative interface. This issue manifests in the admin/?/page/edit page where the keywords parameter fails to properly sanitize user input, creating an avenue for malicious actors to inject arbitrary JavaScript code into the web application. The vulnerability is classified under CWE-79 as a failure to sanitize input data, making it a classic example of client-side script injection that can compromise user sessions and data integrity.
The technical exploitation of this vulnerability occurs when an authenticated administrator or user with administrative privileges navigates to the page editing interface and submits malicious content through the keywords field. The application does not adequately filter or escape the input before rendering it back to the browser, allowing attackers to execute scripts in the context of the victim's browser session. This creates a persistent threat vector where malicious code can be stored and executed whenever the affected page is accessed, potentially leading to session hijacking, data theft, or further exploitation of the compromised system.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to escalate privileges and gain unauthorized access to sensitive administrative functions. When combined with other attack vectors or social engineering techniques, this XSS flaw can serve as a stepping stone for more sophisticated attacks targeting the entire CMS infrastructure. The vulnerability affects the integrity of the content management system by allowing persistent malicious payloads to be injected into page metadata, potentially compromising all content managed through the affected instance.
Security practitioners should implement comprehensive input validation and output encoding measures to prevent such vulnerabilities from occurring in the first place. The recommended mitigations include implementing strict sanitization of all user-supplied input, particularly in administrative interfaces where privileged actions can be performed. Additionally, the implementation of Content Security Policy headers can provide an additional layer of protection against XSS attacks by restricting the sources from which scripts can be executed within the application context. Organizations should also consider implementing web application firewalls and regular security scanning to detect and prevent exploitation of such vulnerabilities in their Frog CMS installations. This vulnerability aligns with ATT&CK technique T1213 which focuses on data from information repositories, as compromised CMS systems can serve as sources for further reconnaissance and lateral movement within affected networks.