#VU24266 Spoofing attack in Office Online Server - CVE-2020-0647
Published: January 14, 2020
Vulnerability identifier: #VU24266
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-0647
CWE-ID: CWE-451
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Office Online Server
Office Online Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to the Office Online does not validate origin in cross-origin communications correctly. A remote attacker can send a specially crafted request to an affected site, perform cross-origin attacks on affected systems and gain access to sensitive information.
Remediation
Install updates from vendor's website.