CVE-2022-1663 in Stop Spam Comments Plugin
Summary
by MITRE • 08/29/2022
The Stop Spam Comments WordPress plugin through 0.2.1.2 does not properly generate the Javascript access token for preventing abuse of comment section, allowing threat authors to easily collect the value and add it to the request.
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Analysis
by VulDB Data Team • 10/09/2022
The vulnerability identified as CVE-2022-1663 affects the Stop Spam Comments WordPress plugin version 0.2.1.2 and earlier, presenting a critical security flaw in the plugin's anti-spam mechanism. This issue stems from the improper generation of JavaScript access tokens designed to prevent abuse of the comment section. The plugin's token generation process fails to implement adequate cryptographic randomness or security measures, creating a predictable or easily discoverable access mechanism that undermines the intended protection. The flaw directly compromises the plugin's core security functionality by allowing unauthorized actors to obtain the access token through simple reconnaissance techniques.
The technical implementation of this vulnerability involves the plugin's JavaScript token generation logic which likely uses insufficient entropy sources or predictable algorithms for creating access tokens. Attackers can easily collect these tokens through various means including network traffic analysis, browser developer tools, or by examining the plugin's source code structure. Once obtained, these tokens can be incorporated into malicious comment requests, effectively bypassing the plugin's intended protection mechanisms. This weakness represents a classic example of insufficient randomization in security token generation, which falls under the CWE-330 weakness category for using weak randomness.
The operational impact of this vulnerability extends beyond simple spam comment flooding, as it fundamentally undermines the integrity of the comment submission system. Threat actors can leverage this weakness to automate spam comment submissions, potentially leading to service degradation, content poisoning, and reputational damage for affected websites. The vulnerability also creates opportunities for more sophisticated attacks including comment-based data exfiltration or the exploitation of other related vulnerabilities within the comment submission pipeline. The ease of exploitation means that even non-technical attackers can effectively bypass the plugin's protection measures, making this a particularly concerning security flaw for WordPress site administrators.
Mitigation strategies for CVE-2022-1663 should prioritize immediate plugin updates to versions that properly implement secure token generation mechanisms. Organizations should also consider implementing additional layers of protection such as rate limiting, CAPTCHA implementations, and IP-based restrictions on comment submissions. Security monitoring should include detection of unusual comment submission patterns and token usage anomalies that could indicate exploitation attempts. The vulnerability demonstrates the importance of proper cryptographic implementation in web applications and aligns with ATT&CK technique T1213 for Data from Information Repositories, where attackers exploit weak access controls to gain unauthorized access to comment systems. Organizations should also review their overall WordPress security posture, including plugin management practices and regular security audits to prevent similar vulnerabilities in other components of their web infrastructure.