CVE-2019-11825 : What You Need to Know
Learn about CVE-2019-11825, a cross-site scripting vulnerability in Synology Calendar allowing remote attackers to inject malicious scripts. Find mitigation steps and best practices here.
An exploit of a cross-site scripting (XSS) vulnerability has been detected in the Event Editor of Synology Calendar prior to version 2.3.0-0615. This vulnerability enables malicious individuals to inject arbitrary web scripts or HTML code by utilizing the title parameter.
Understanding CVE-2019-11825
This CVE involves a cross-site scripting vulnerability in Synology Calendar.
What is CVE-2019-11825?
CVE-2019-11825 is a security vulnerability in Synology Calendar that allows remote attackers to inject malicious web scripts or HTML code through the title parameter.
The Impact of CVE-2019-11825
The vulnerability has a CVSS base score of 6.5, indicating a medium severity level. The impact includes low confidentiality, integrity, and availability impacts, with low privileges required for exploitation.
Technical Details of CVE-2019-11825
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability in the Event Editor of Synology Calendar allows remote attackers to perform cross-site scripting attacks by injecting malicious scripts or HTML code via the title parameter.
Affected Systems and Versions
- Product: Calendar
- Vendor: Synology
- Versions Affected: Less than 2.3.0-0615 (unspecified version type)
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: Low
- User Interaction: Required
- Scope: Changed
- Vector String: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Mitigation and Prevention
Protecting systems from CVE-2019-11825 is crucial to maintaining security.
Immediate Steps to Take
- Update Synology Calendar to version 2.3.0-0615 or higher to mitigate the vulnerability.
- Educate users about the risks of executing scripts from untrusted sources.
Long-Term Security Practices
- Regularly monitor and audit web applications for vulnerabilities like XSS.
- Implement input validation mechanisms to prevent script injection attacks.
Patching and Updates
- Stay informed about security advisories from Synology and apply patches promptly to address known vulnerabilities.