CVE-2006-7043 in Chipmunk Blogger
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Chipmunk Blogger allow remote authenticated users to inject arbitrary web script or HTML via script tags in (1) posts and (2) profile names; and (3) a javascript URI in a URL argument in the photo gallery.
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Analysis
by VulDB Data Team • 10/08/2017
The vulnerability identified as CVE-2006-7043 represents a critical cross-site scripting weakness in the Chipmunk Blogger platform that exposes users to malicious web script injection attacks. This vulnerability affects the core functionality of the blogging system by failing to properly sanitize user input across multiple data entry points within the application's interface. The flaw exists in the input validation mechanisms that should have prevented malicious code from being executed when users submit content through various interactive components of the platform.
The technical implementation of this vulnerability stems from insufficient output encoding and input sanitization practices within the Chipmunk Blogger application. Attackers with legitimate authentication credentials can exploit this weakness by injecting script tags into posts and profile names, which then get executed when other users view these compromised elements. Additionally, the vulnerability extends to the photo gallery functionality where javascript URIs can be injected through URL arguments, creating multiple attack vectors for malicious code execution. This represents a classic case of improper input handling where user-supplied data flows directly into the application's output without adequate sanitization.
The operational impact of this vulnerability is significant as it allows authenticated attackers to potentially compromise user sessions and execute malicious code within the context of other users' browsers. This creates a persistent threat where compromised users' sessions could be hijacked, leading to unauthorized access to their personal data, posts, and profile information. The vulnerability affects the integrity and confidentiality of user data by enabling attackers to manipulate content and potentially redirect users to malicious websites. The presence of multiple attack vectors increases the exploitation surface and makes it more challenging for administrators to fully mitigate the risk through single-point fixes.
From a cybersecurity perspective, this vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws in web applications, and maps to several ATT&CK techniques including T1566 for phishing and T1059 for command and scripting interpreter usage. The attack chain typically involves an authenticated user with malicious intent who leverages the vulnerability to inject persistent scripts that can harvest cookies, redirect traffic, or execute additional payloads. Organizations should implement comprehensive input validation, output encoding, and content security policies to prevent such vulnerabilities. Regular security assessments and code reviews should be conducted to identify similar issues in legacy applications, while immediate patching or mitigation strategies should be deployed to protect against active exploitation attempts. The vulnerability highlights the critical importance of maintaining robust security practices even in seemingly simple web applications that handle user-generated content.