Description Preview
A cross-site scripting (XSS) vulnerability has been identified in Plesk Obsidian version 18.0.17. This vulnerability allows remote unauthenticated attackers to inject arbitrary JavaScript, HTML, or CSS code via GET parameters. When a victim accesses a specially crafted URL, the injected code executes within their browser in the context of the vulnerable Plesk site. This can lead to session hijacking, credential theft, or other client-side attacks against users of the Plesk control panel.
Overview
Plesk Obsidian 18.0.17 contains a reflected cross-site scripting vulnerability (CWE-79) that allows attackers to inject malicious scripts through GET parameters. Since the vulnerability is accessible without authentication, it presents a significant risk to Plesk administrators and users. When exploited, the injected code executes in the victim's browser with the same privileges as the Plesk application, potentially allowing attackers to steal session cookies, capture credentials, or perform unauthorized actions on behalf of the victim. The vulnerability affects the web interface of Plesk Obsidian and can be triggered by convincing a user to click on a specially crafted link.
Remediation
To address this vulnerability, system administrators should:
- Update Plesk Obsidian to the latest version that contains the security fix
- If immediate updating is not possible, consider implementing web application firewall (WAF) rules to filter potentially malicious GET requests
- Educate users about the risks of clicking on suspicious links, especially those with unusual parameters
- Monitor system logs for suspicious access attempts that may indicate exploitation attempts
- Consider implementing Content Security Policy (CSP) headers to mitigate the impact of XSS vulnerabilities
References
- Detailed vulnerability analysis: https://medium.com/%400x00crash/xss-reflected-in-plesk-onyx-and-obsidian-1173a3eaffb5
- CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'): 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
