CVE-2022-0601 in Countdown, Coming Soon, Maintenance Plugin
Summary
by MITRE • 03/14/2022
The Countdown, Coming Soon, Maintenance WordPress plugin before 2.2.9 does not sanitize and escape the post parameter before outputting it back in an admin page, leading to a Reflected Cross-Site Scripting.
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Analysis
by VulDB Data Team • 03/16/2022
The vulnerability identified as CVE-2022-0601 affects the Countdown, Coming Soon, Maintenance WordPress plugin version 2.2.8 and earlier, representing a critical security flaw that exposes WordPress administrators to reflected cross-site scripting attacks. This issue stems from insufficient input validation and output sanitization within the plugin's administrative interface where user-provided data is directly incorporated into HTML responses without proper escaping mechanisms. The vulnerability specifically occurs when the plugin processes the 'post' parameter within admin pages, creating an avenue for malicious actors to inject harmful scripts that execute in the context of authenticated administrator sessions.
The technical implementation of this vulnerability aligns with CWE-79, which describes improper neutralization of input during web page generation, commonly known as cross-site scripting. The flaw exists because the plugin fails to apply proper sanitization routines to the 'post' parameter before rendering it in administrative contexts. This allows attackers to craft malicious URLs containing script payloads that, when visited by administrators, get executed in their browser sessions. The reflected nature of this vulnerability means that the malicious script code is embedded within the URL itself and executed by the victim's browser when they click on the crafted link, making it particularly dangerous in targeted attack scenarios.
From an operational perspective, this vulnerability poses significant risks to WordPress installations that rely on the affected plugin for maintenance or countdown functionality. An attacker who successfully exploits this vulnerability could execute arbitrary JavaScript code within the administrator's browser session, potentially leading to full administrative compromise. The attack vector typically involves sending a malicious link via email or other communication channels to an administrator, who then clicks the link while logged into their WordPress admin panel. This could result in session hijacking, unauthorized modifications to website content, data exfiltration, or the installation of additional malware through the compromised administrative session. The vulnerability is particularly concerning because it requires no special privileges from the attacker beyond the ability to convince an administrator to click a malicious link, making it a prime target for social engineering campaigns.
Mitigation strategies for CVE-2022-0601 should prioritize immediate plugin updates to version 2.2.9 or later, which contain the necessary sanitization fixes. Organizations should also implement additional defensive measures including strict access controls for administrative interfaces, regular security audits of installed plugins, and monitoring for suspicious administrative activities. Network-based protections such as web application firewalls can provide additional layers of defense by detecting and blocking known malicious patterns in URL parameters. Security teams should also consider implementing content security policies to limit the execution of unauthorized scripts within administrative interfaces. The vulnerability demonstrates the critical importance of proper input validation and output escaping practices in web applications, as outlined in the OWASP Top Ten security principles and ATT&CK framework's T1211 technique for exploitation of web application vulnerabilities. Regular patch management procedures should be enforced to ensure all WordPress plugins remain up-to-date with security patches, preventing similar vulnerabilities from being exploited in the future.