CVE-2020-20344 in WTCMS
Summary
by MITRE • 09/02/2021
WTCMS 1.0 contains a reflective cross-site scripting (XSS) vulnerability in the keyword search function under the background articles module.
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Analysis
by VulDB Data Team • 09/05/2021
The vulnerability identified as CVE-2020-20344 represents a critical security flaw in WTCMS 1.0, specifically within the administrative articles module where keyword search functionality is implemented. This reflective cross-site scripting vulnerability exposes the content management system to potential exploitation by malicious actors who can inject malicious scripts into search parameters. The flaw exists in the backend administrative interface, making it particularly concerning as it could allow unauthorized individuals with access to administrative functions to compromise the system's integrity.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding within the search functionality of the articles management module. When users submit search queries containing specially crafted malicious payloads through the keyword search field, the application fails to properly sanitize these inputs before processing and displaying them back to users. This reflective nature means that the malicious script is executed in the victim's browser context when they view the search results page, making it a classic XSS attack vector. The vulnerability maps directly to CWE-79 which defines Cross-Site Scripting as a weakness where applications fail to properly validate or encode user-supplied data before including it in dynamically generated web pages.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it creates a persistent threat vector that could be leveraged for more sophisticated attacks. An attacker could craft malicious search terms that, when executed, could steal session cookies, redirect users to malicious domains, or even execute arbitrary commands in the victim's browser context. The reflected nature of the vulnerability means that the attack payload is typically delivered via a link or email, making it particularly effective for social engineering campaigns. This vulnerability directly aligns with ATT&CK technique T1566 which describes the use of malicious links or attachments to deliver payloads to victims.
Mitigation strategies for CVE-2020-20344 should focus on implementing comprehensive input validation and output encoding measures throughout the search functionality. The most effective immediate solution involves sanitizing all user inputs through proper encoding techniques such as HTML entity encoding, JavaScript escaping, and implementing Content Security Policy headers to limit script execution. Organizations should also consider implementing proper input validation that rejects or removes potentially dangerous characters from search queries, particularly those commonly associated with XSS attacks such as angle brackets, script tags, and javascript protocols. The fix should be implemented following secure coding practices that align with OWASP Top Ten recommendations for preventing XSS vulnerabilities, including the use of context-specific encoding for different output contexts. Additionally, regular security testing and code reviews should be conducted to identify similar vulnerabilities in other parts of the application that may not have been properly sanitized.