CSV Injection in Appointment Booking Calendar - CVE-2020-9372
Published: March 5, 2020
Vulnerability identifier: #VU25777
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-9372
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to inject arbitrary code into CSV files.
The vulnerability exists due to insufficient sanitization of user-supplied data when constructing CSV files in fields such as Description or Name in any booking form. A remote attacker can inject malicious data into the contact form fields that is used later by the plugin to generate CSV files. Such files can be opened with Microsoft Excel built-in functions and utilize its functionality to execute malicious macros.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Appointment Booking Calendar
How to mitigate CVE-2020-9372
Install updates from vendor's website.
Appointment Booking Calendar - update to 1.3.35