Description Preview
Cross-site scripting (XSS) vulnerability in Diigo Toolbar and Diigolet allows remote attackers to inject arbitrary web script or HTML via a public comment. The issue stems from insufficient sanitization of user-supplied comments, enabling an attacker to execute malicious scripts in the context of victims viewing those comments. This could lead to information leakage, cookie/session hijacking, or defacement, impacting users of the Diigo toolbar and Diigolet.
Overview
This CVE describes a client-side XSS flaw in the Diigo Toolbar and Diigolet, where unsanitized public comments can be crafted to execute arbitrary JavaScript when rendered in the context of a user’s browser. The vulnerability could be exploited remotely by attackers who submit malicious comments, potentially compromising user sessions and data exposed through the affected UI components. Publicly disclosed in 2008, the issue highlights the risk associated with rendering user-generated content without proper escaping or sanitization in browser extensions.
Remediation
- If you rely on the Diigo Toolbar/Diigolet, update to a patched version or disable the extension until a fix is released.
- For developers and site owners: implement robust input validation and output encoding for all user-submitted comments to ensure that any markup or scripts are neutralized before rendering.
- Enforce a strict Content Security Policy (CSP) on pages that display user-generated content to limit script execution and resource loading from untrusted sources.
- Avoid innerHTML or other direct DOM insertion of untrusted content; prefer safe text insertion or proper escaping.
- Consider whitelisting allowed HTML and utilizing a sanitizer library to strip or neutralize potentially dangerous elements and attributes.
- Monitor and rate-limit comment submissions, and audit stored comments for XSS vectors.
- Keep browsers and extensions up to date with security patches; educate users to disable extensions from untrusted sources if patches are unavailable.
References
Industry ExposureMost to leastThis section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.
- Accommodation & Food ServicesAccommodation & Food Services: Low
- Administrative, Support, Waste Management & Remediation ServicesAdministrative, Support, Waste Management & Remediation Services: Low
- Agriculture, Forestry Fishing & HuntingAgriculture, Forestry Fishing & Hunting: Low
- Arts, Entertainment & RecreationArts, Entertainment & Recreation: Low
- ConstructionConstruction: Low
- Educational ServicesEducational Services: Low
- Finance and InsuranceFinance and Insurance: Low
- Health Care & Social AssistanceHealth Care & Social Assistance: Low
- InformationInformation: Low
- Management of Companies & EnterprisesManagement of Companies & Enterprises: Low
- ManufacturingManufacturing: Low
- MiningMining: Low
- Other Services (except Public Administration)Other Services (except Public Administration): Low
- Professional, Scientific, & Technical ServicesProfessional, Scientific, & Technical Services: Low
- Public AdministrationPublic Administration: Low
- Real Estate Rental & LeasingReal Estate Rental & Leasing: Low
- Retail TradeRetail Trade: Low
- Transportation & WarehousingTransportation & Warehousing: Low
- UtilitiesUtilities: Low
- Wholesale TradeWholesale Trade: Low
