CVE-2008-7184 in Diigolet
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Diigo Toolbar and Diigolet allows remote attackers to inject arbitrary web script or HTML via a public comment.
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Analysis
by VulDB Data Team • 01/27/2025
The CVE-2008-7184 vulnerability represents a critical cross-site scripting flaw discovered in the Diigo Toolbar and Diigolet browser extensions, which were widely used for social bookmarking and web annotation services. This vulnerability specifically affects the handling of public comments within the Diigo ecosystem, creating a significant security risk for users who interact with annotated content on web pages. The flaw stems from insufficient input validation and output encoding mechanisms within the browser extension's comment processing functionality, allowing malicious actors to exploit the system through crafted comment submissions.
The technical nature of this vulnerability aligns with CWE-79, which specifically addresses cross-site scripting vulnerabilities in web applications and browser extensions. The flaw occurs when the Diigo Toolbar and Diigolet components fail to properly sanitize user-supplied input from public comments before rendering them in web pages. This inadequate sanitization allows attackers to inject malicious HTML and JavaScript code that executes in the context of other users' browsers when they view the compromised comments. The vulnerability demonstrates poor secure coding practices in input validation and output encoding, particularly in client-side components that handle user-generated content.
The operational impact of CVE-2008-7184 extends beyond simple script injection, as it enables attackers to perform various malicious activities through the compromised browser extensions. An attacker could inject scripts that steal session cookies, redirect users to malicious websites, or harvest sensitive information from users' browsing sessions. The vulnerability affects not only individual users but also creates potential risks for organizations where employees use the Diigo extensions for collaborative work and web annotation. The attack vector is particularly concerning because it requires minimal user interaction beyond viewing a public comment, making it an effective vector for mass exploitation.
The threat landscape for this vulnerability aligns with ATT&CK technique T1566, which covers social engineering attacks through malicious content delivery. The Diigo Toolbar and Diigolet extensions, being browser-based tools, provide attackers with a legitimate means of injecting malicious code into users' browsing environments. This vulnerability essentially transforms the Diigo platform into an attack surface that can be leveraged for various malicious purposes, including credential theft, browser compromise, and data exfiltration. The widespread adoption of Diigo extensions in enterprise and personal environments amplifies the potential impact of this vulnerability.
Mitigation strategies for CVE-2008-7184 should focus on immediate patching of affected Diigo Toolbar and Diigolet versions, along with implementing proper input validation and output encoding mechanisms. Organizations should consider disabling or removing the affected browser extensions until patches are applied, and implement web application firewalls that can detect and block XSS attempts. The vulnerability highlights the importance of secure coding practices in browser extensions and emphasizes the need for regular security assessments of third-party browser tools. Additionally, user education regarding the risks of viewing untrusted comments and the importance of keeping browser extensions updated remains crucial for mitigating this class of vulnerability.