CVE-2020-24917 : Vulnerability Insights and Analysis
Learn about CVE-2020-24917, a cross-site scripting vulnerability in osTicket before 1.14.3. Find out the impact, affected versions, and mitigation steps.
osTicket before 1.14.3 is vulnerable to XSS attacks through a specific file upload function.
Understanding CVE-2020-24917
This CVE identifies a cross-site scripting (XSS) vulnerability in osTicket before version 1.14.3.
What is CVE-2020-24917?
CVE-2020-24917 refers to a security issue in osTicket that allows attackers to execute malicious scripts via a crafted filename uploaded through DraftAjaxAPI::_uploadInlineImage() in include/ajax.draft.php.
The Impact of CVE-2020-24917
This vulnerability could be exploited by malicious actors to execute arbitrary scripts in the context of a user's browser, potentially leading to unauthorized actions or data theft.
Technical Details of CVE-2020-24917
osTicket before version 1.14.3 is susceptible to XSS attacks due to improper input validation in the file upload functionality.
Vulnerability Description
The vulnerability arises from inadequate sanitization of user-supplied input when uploading images, allowing attackers to embed malicious scripts that get executed in the victim's browser.
Affected Systems and Versions
- Product: osTicket
- Vendor: osTicket
- Versions Affected: Versions prior to 1.14.3
Exploitation Mechanism
Attackers can exploit this vulnerability by uploading a file with a specially crafted filename that contains malicious scripts, which are then executed when the file is processed.
Mitigation and Prevention
To address CVE-2020-24917 and enhance overall security, follow these mitigation strategies:
Immediate Steps to Take
- Upgrade osTicket to version 1.14.3 or later to patch the vulnerability.
- Avoid uploading files with suspicious filenames to prevent XSS attacks.
Long-Term Security Practices
- Implement strict input validation and output encoding to mitigate XSS risks.
- Regularly monitor and update security patches for osTicket to address potential vulnerabilities.
Patching and Updates
Ensure timely installation of security updates and patches provided by osTicket to protect against known vulnerabilities.