SB2021120348 - Arbitrary file upload in Modern Events Calendar Lite WordPress plugin
Published: December 3, 2021 Updated: September 3, 2022
Security Bulletin ID
SB2021120348
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Arbitrary file upload (CVE-ID: CVE-2021-24145)
CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear
The vulnerability allows a remote user to compromise vulnerable system.
The vulnerability exists due to insufficient validation of content-type when processing files uploads. A remote website administrator can upload an arbitrary PHP file by setting its content-type to "text/csv" and execute it on the server.
Remediation
Install update from vendor's website.