CVE-2022-1422 in Discy Theme
Summary
by MITRE • 06/08/2022
The Discy WordPress theme before 5.2 does not check for CSRF tokens in the AJAX action discy_reset_options, allowing an attacker to trick an admin into resetting the site settings back to defaults.
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Analysis
by VulDB Data Team • 06/10/2022
The vulnerability identified as CVE-2022-1422 affects the Discy WordPress theme version 5.1 and earlier, representing a critical security flaw that undermines the integrity of administrative operations within WordPress environments. This issue stems from the absence of proper cross-site request forgery token validation in the AJAX handler responsible for resetting theme options, creating a significant attack vector that can be exploited by malicious actors to compromise WordPress site configurations. The vulnerability specifically targets the discy_reset_options AJAX action, which serves as a legitimate administrative function but lacks the necessary security mechanisms to verify the authenticity of requests originating from authorized administrators.
The technical implementation of this vulnerability exposes a fundamental flaw in the theme's security architecture where the AJAX endpoint discy_reset_options fails to validate CSRF tokens before executing the reset operation. This omission allows attackers to craft malicious requests that can be delivered to authenticated administrators through social engineering techniques or by exploiting other attack vectors such as cross-site scripting vulnerabilities. When an administrator visits a compromised page or clicks on a malicious link, the attacker can trigger the reset function without the administrator's knowledge or explicit consent, effectively reverting all custom theme settings to their default values. This behavior constitutes a direct violation of the principle of least privilege and demonstrates poor input validation practices that are commonly associated with CSRF vulnerabilities.
The operational impact of this vulnerability extends beyond simple configuration resets, as it can potentially lead to complete site compromise and data loss. When administrators reset theme options, they may inadvertently expose sensitive configuration parameters or disable critical security features that were previously implemented. The attack scenario typically involves an attacker constructing a malicious payload that leverages the vulnerable AJAX endpoint, often by embedding the attack within a compromised website or through phishing campaigns targeting administrators with elevated privileges. This vulnerability is particularly dangerous in environments where administrators frequently visit multiple websites or where the theme is used in enterprise or high-security contexts where maintaining consistent configuration settings is critical.
From a cybersecurity perspective, this vulnerability aligns with CWE-352, which specifically addresses Cross-Site Request Forgery, and represents a classic example of how insufficient validation of user requests can lead to unauthorized administrative actions. The ATT&CK framework categorizes this as a privilege escalation technique under the T1078 credential access domain, where attackers can manipulate legitimate administrative functions to gain unauthorized control over system configurations. Organizations using the affected Discy theme version should prioritize immediate remediation through theme updates, as the vulnerability essentially provides attackers with an easy path to execute administrative functions without proper authorization. The security implications are compounded by the fact that many administrators may not immediately notice the configuration resets, potentially leaving systems in a vulnerable state for extended periods while the malicious activity remains undetected.
The mitigation strategies for CVE-2022-1422 primarily focus on updating to the patched version of the Discy theme, specifically version 5.2 or later, where proper CSRF token validation has been implemented. Security administrators should also consider implementing additional protective measures such as monitoring for unusual AJAX activity patterns and ensuring that all WordPress themes and plugins are regularly updated to address known vulnerabilities. Network-level protections including web application firewalls and strict access controls can help detect and prevent exploitation attempts, while user education regarding phishing and social engineering tactics remains crucial in preventing successful attacks that rely on tricking administrators into visiting malicious pages. The vulnerability demonstrates the critical importance of implementing comprehensive security controls across all layers of web applications, particularly in administrative interfaces where the potential for damage from unauthorized actions is highest.