Description Preview
YzmCMS version 5.3 contains a cross-site scripting (XSS) vulnerability in the /link/add.html component. This vulnerability allows remote attackers to inject malicious client-side scripts that can execute in a victim's browser when they view the affected page. The injected script can steal sensitive information such as session tokens and cookies, manipulate web content, or redirect users to malicious websites. This vulnerability occurs due to insufficient validation and sanitization of user-supplied input before it is displayed in the application's output.
Overview
The vulnerability exists in YzmCMS v5.3, a content management system written in PHP. The affected component is the link addition functionality accessible via the /link/add.html path. When user input is not properly sanitized before being rendered in the web page, attackers can inject arbitrary JavaScript code that will execute in the context of the victim's browser. This type of vulnerability can lead to various attacks including session hijacking, credential theft, and defacement of the website. The vulnerability is classified as CWE-79, which is a common weakness enumeration for improper neutralization of input during web page generation.
Remediation
To remediate this vulnerability, system administrators and developers should:
- Update to the latest version of YzmCMS if a patched version is available.
- If an update is not available, implement proper input validation and output encoding:
- Validate all user inputs against a whitelist of allowed characters
- Implement context-aware output encoding when displaying user-supplied data
- Consider implementing Content Security Policy (CSP) headers to mitigate the impact of XSS attacks
- Review other similar components in the application for similar vulnerabilities
- Consider using security frameworks or libraries that automatically sanitize user input
- Regularly scan the application for web vulnerabilities using automated tools
References
- GitHub Issue: https://github.com/yzmcms/yzmcms/issues/21
- CWE-79: Improper Neutralization of Input During Web Page Generation: https://cwe.mitre.org/data/definitions/79.html
- OWASP XSS Prevention Cheat Sheet: https://cheatsheetseries.owasp.org/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.html
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
- Administrative, Support, Waste Management & Remediation ServicesAdministrative, Support, Waste Management & Remediation Services
- Agriculture, Forestry Fishing & HuntingAgriculture, Forestry Fishing & Hunting
- Arts, Entertainment & RecreationArts, Entertainment & Recreation
- ConstructionConstruction
- Educational ServicesEducational Services
- Finance and InsuranceFinance and Insurance
- Health Care & Social AssistanceHealth Care & Social Assistance
- InformationInformation
- Management of Companies & EnterprisesManagement of Companies & Enterprises
- ManufacturingManufacturing
- MiningMining
- Other Services (except Public Administration)Other Services (except Public Administration)
- Professional, Scientific, & Technical ServicesProfessional, Scientific, & Technical Services
- Public AdministrationPublic Administration
- Real Estate Rental & LeasingReal Estate Rental & Leasing
- Retail TradeRetail Trade
- Transportation & WarehousingTransportation & Warehousing
- UtilitiesUtilities
- Wholesale TradeWholesale Trade
