SB2023121356 - Stored XSS via SVG files in Umbraco CMS
Published: December 13, 2023
Security Bulletin ID
SB2023121356
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Arbitrary file upload (CVE-ID: CVE-2023-49279)
CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
The vulnerability allows a remote user to perform XSS attack.
The vulnerability exists due to the application allows upload of SVG files with JavaScript code inside. A remote user can upload a specially crafted SVG file and perform XSS attacks.
Remediation
Install update from vendor's website.