CVE-2012-2638 in SmallPICT
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in SmallPICT.cgi in SmallPICT before 2.7 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 02/17/2019
The CVE-2012-2638 vulnerability represents a classic cross-site scripting flaw within the SmallPICT web application framework prior to version 2.7. This vulnerability resides in the SmallPICT.cgi component which serves as a critical interface for processing and displaying image data within web environments. The flaw manifests as an insufficient input validation mechanism that fails to properly sanitize user-supplied data before incorporating it into dynamically generated web content. The vulnerability affects web applications that utilize the SmallPICT framework for image processing and display, creating a potential attack surface where malicious actors can exploit the lack of proper data sanitization to inject harmful script code.
The technical exploitation of this vulnerability occurs through unspecified vectors that likely involve the manipulation of parameters or input fields within the SmallPICT.cgi script. When user input is processed without adequate filtering or encoding, attackers can craft malicious payloads that execute within the context of other users' browsers. This typically involves injecting javascript code or html elements that get rendered as part of the web page content, enabling attackers to perform actions such as stealing session cookies, redirecting users to malicious sites, or defacing web pages. The vulnerability is categorized under CWE-79 which specifically addresses cross-site scripting flaws in web applications, representing one of the most prevalent and dangerous categories of web security vulnerabilities.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it can serve as a stepping stone for more sophisticated attacks within web application environments. Attackers leveraging this vulnerability can establish persistent access to user sessions, potentially compromising entire user bases within applications that rely on the vulnerable SmallPICT framework. The attack surface is particularly concerning because it affects the core image processing functionality of web applications, making it difficult for administrators to isolate or patch specific components without affecting overall application functionality. This vulnerability aligns with ATT&CK technique T1531 which covers "Modify Existing Service" and T1059.007 which covers "Command and Scripting Interpreter: JavaScript", demonstrating how the vulnerability can be weaponized for broader exploitation campaigns.
Mitigation strategies for CVE-2012-2638 should focus on immediate application updates to version 2.7 or later, where the vulnerability has been addressed through proper input validation and sanitization mechanisms. Organizations should implement comprehensive input filtering that employs proper encoding techniques for all user-supplied data before processing or display. The implementation of Content Security Policy headers can provide additional defense-in-depth measures by restricting the execution of unauthorized scripts within affected web applications. Regular security assessments and web application firewalls should be deployed to monitor for exploitation attempts and prevent successful injection of malicious content. The vulnerability highlights the critical importance of maintaining up-to-date web application frameworks and implementing robust input validation practices as recommended by OWASP Top Ten Project guidelines for preventing cross-site scripting vulnerabilities.