CVE-2015-10107 in Simplr Registration Form Plus+ Plugin
Summary
by MITRE • 05/31/2023
A vulnerability was found in Simplr Registration Form Plus+ Plugin up to 2.3.4 on WordPress and classified as problematic. This issue affects some unknown processing. The manipulation leads to cross site scripting. The attack may be initiated remotely. Upgrading to version 2.3.5 is able to address this issue. The name of the patch is d588446844dd49232ab400ef213ff5b92121c33e. It is recommended to upgrade the affected component. The identifier VDB-230153 was assigned to this vulnerability.
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Analysis
by VulDB Data Team • 06/21/2023
The vulnerability identified as CVE-2015-10107 resides within the Simplr Registration Form Plus+ WordPress plugin, specifically affecting versions up to 2.3.4. This plugin facilitates user registration functionality on WordPress websites, making it a critical component in many web applications. The vulnerability manifests as a cross-site scripting flaw that operates during the processing of user input within the plugin's registration form handling mechanism. The issue represents a significant security concern as it allows malicious actors to inject malicious scripts into web pages viewed by other users, potentially compromising the integrity and security of the entire WordPress installation.
The technical flaw in this vulnerability stems from inadequate input validation and output sanitization within the plugin's processing logic. When users submit registration data through the form, the plugin fails to properly sanitize or escape the input before rendering it in the web page context. This insufficient validation creates an opening for attackers to craft malicious payloads that can execute within the browser context of legitimate users who view the affected pages. The vulnerability is classified as a client-side attack vector where the malicious script executes in the victim's browser rather than on the server, making it particularly dangerous as it can persist in the application's data storage and affect multiple users over time.
The operational impact of this cross-site scripting vulnerability extends beyond simple data theft or session hijacking. Attackers can leverage this flaw to execute arbitrary JavaScript code in the context of the victim's browser, potentially leading to full account compromise, data exfiltration, or even the installation of malware. The remote exploitation capability means that attackers do not require physical access to the system or local network privileges to exploit this vulnerability. This makes the attack surface particularly broad as any user who visits a page containing the vulnerable plugin could become a victim. The vulnerability can be exploited through various vectors including email links, social media posts, or compromised websites that embed the malicious registration form functionality.
Security professionals should recognize this vulnerability as a classic example of CWE-79 - Cross-site Scripting, which represents one of the most prevalent and dangerous web application security flaws in the industry. The ATT&CK framework categorizes this as a technique under T1566 - Phishing, where attackers can use the XSS vulnerability to craft convincing phishing campaigns that appear legitimate to end users. The patch provided in version 2.3.5 addresses this issue through proper input sanitization and output encoding mechanisms that prevent malicious scripts from being executed. Organizations should prioritize immediate upgrading of all affected WordPress installations to version 2.3.5 or later, as the patch specifically targets the root cause of the vulnerability through the commit hash d588446844dd49232ab400ef213ff5b92121c33e. This remediation process should be integrated into regular security maintenance procedures to prevent similar vulnerabilities from being introduced in the future. The vulnerability identifier VDB-230153 serves as a reference point for tracking and monitoring this specific security issue across various security databases and vulnerability management systems.