CVE-2022-25489 in Atom CMS
Summary
by MITRE • 03/15/2022
Atom CMS v2.0 was discovered to contain a reflected cross-site scripting (XSS) vulnerability via the "A" parameter in /widgets/debug.php.
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Analysis
by VulDB Data Team • 03/18/2022
The vulnerability identified as CVE-2022-25489 represents a critical reflected cross-site scripting flaw within Atom CMS version 2.0, specifically located in the /widgets/debug.php script. This issue arises from improper input validation and output encoding mechanisms that fail to adequately sanitize user-supplied data before incorporating it into web responses. The vulnerability is triggered through the "A" parameter, which serves as an entry point for malicious actors to inject harmful scripts into the application's response. The reflected nature of this vulnerability means that the malicious payload is immediately reflected back to the user's browser without being stored on the server, making it particularly dangerous for targeted attacks.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL containing a crafted payload in the "A" parameter and delivers it to unsuspecting users. When victims click on the malicious link, their browsers execute the injected JavaScript code within the context of the vulnerable CMS application. This allows attackers to perform various malicious activities including session hijacking, credential theft, redirection to malicious sites, or even defacement of the affected website. The vulnerability directly maps to CWE-79 which defines Cross-Site Scripting as a weakness where untrusted data is sent to a web browser without proper validation or encoding, enabling attackers to inject client-side scripts.
From an operational impact perspective, this vulnerability poses significant risks to organizations using Atom CMS v2.0 as it can be leveraged to compromise user sessions and potentially gain unauthorized access to administrative functions. The reflected nature of the XSS attack means that the vulnerability can be exploited through social engineering campaigns, phishing emails, or by embedding malicious links in compromised websites. Attackers can craft payloads that steal session cookies, redirect users to malicious domains, or inject additional malicious scripts that persist in the victim's browser. The vulnerability affects the integrity and confidentiality of user data, potentially leading to unauthorized access to sensitive information and system compromise.
Security professionals should prioritize immediate remediation of this vulnerability by implementing proper input validation and output encoding mechanisms throughout the application. The recommended mitigation strategy involves sanitizing all user inputs, particularly the "A" parameter in the debug.php script, and ensuring that any data returned to users is properly encoded to prevent script execution. Organizations should also consider implementing Content Security Policy (CSP) headers to add an additional layer of protection against XSS attacks. This vulnerability aligns with ATT&CK technique T1531 which focuses on the use of malicious scripts to gain access to systems, and T1566 which addresses social engineering techniques used to deliver malicious payloads. Regular security audits, input validation testing, and maintaining up-to-date software versions should be implemented to prevent similar vulnerabilities from being introduced in future deployments. The remediation process should include thorough code review of all input handling mechanisms and implementation of robust sanitization procedures to ensure that user-supplied data cannot be used to execute unintended code within the application context.