CVE-2018-0605 in Pixelpost
Summary
by MITRE
Cross-site scripting vulnerability in Pixelpost v1.7.3 and earlier allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 02/22/2020
The vulnerability identified as CVE-2018-0605 represents a critical cross-site scripting flaw within Pixelpost version 1.7.3 and earlier installations. This vulnerability falls under the broader category of web application security weaknesses that can be exploited by malicious actors to compromise user sessions and potentially gain unauthorized access to sensitive information. The affected software represents a content management system that allows users to publish and manage web content, making it a prime target for attackers seeking to exploit client-side vulnerabilities. The unspecified vectors in the original description suggest that multiple entry points within the application may be susceptible to this type of injection attack, indicating a fundamental flaw in the application's input validation and output encoding mechanisms.
This cross-site scripting vulnerability stems from inadequate sanitization of user-supplied input data within the Pixelpost application. When users submit content or interact with the application through various forms, comments, or parameters, the system fails to properly validate or encode this data before rendering it in web pages. The vulnerability is classified as CWE-79 - Improper Neutralization of Input During Web Page Generation, which is a well-documented weakness in web application security that has been consistently identified across numerous applications. The flaw allows remote attackers to inject malicious scripts that execute in the context of other users' browsers, potentially leading to session hijacking, credential theft, or redirection to malicious websites. Attackers can leverage this vulnerability through various means including crafted URLs, form submissions, or even through social engineering tactics that encourage users to click on malicious links.
The operational impact of this vulnerability extends beyond simple data corruption or display issues, as it can be exploited to perform sophisticated attacks against end users. When exploited successfully, the XSS vulnerability enables attackers to execute arbitrary scripts within the victim's browser, potentially allowing them to steal session cookies, modify page content, redirect users to malicious sites, or even perform actions on behalf of authenticated users. The attack surface is particularly concerning given that Pixelpost is designed for content publishing and user interaction, meaning that any published content or user-generated data could serve as an injection vector. This vulnerability directly violates the principle of least privilege and can be categorized under ATT&CK technique T1059.001 - Command and Scripting Interpreter: PowerShell, though more accurately represents the broader category of client-side exploitation techniques. The potential for privilege escalation exists when the application handles administrative functions, as successful exploitation could lead to full system compromise through session hijacking or credential theft.
Mitigation strategies for CVE-2018-0605 must focus on implementing comprehensive input validation and output encoding mechanisms throughout the Pixelpost application. Organizations should immediately upgrade to the latest version of Pixelpost where this vulnerability has been patched, as the maintainers have likely addressed the underlying input sanitization issues. Additionally, implementing proper content security policies, using secure coding practices, and deploying web application firewalls can provide additional layers of protection. The vulnerability demonstrates the critical importance of input validation and output encoding as fundamental security controls, aligning with security frameworks such as OWASP Top Ten and NIST cybersecurity guidelines. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other applications, as this type of flaw is commonly found in legacy systems that have not been properly updated or maintained. Organizations should also implement proper security monitoring to detect potential exploitation attempts and ensure that all user-generated content is properly sanitized before being rendered to end users.