Spoofing attack in Office Online Server - CVE-2019-1447
Published: November 12, 2019
Vulnerability identifier: #VU22691
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-1447
CWE-ID: CWE-451
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Office Online Server
Office Online Server
Detailed vulnerability description
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to Office Online Server improperly validates origin in cross-origin communications handlers. A remote attacker can send a specially crafted request to the affected website and perform a spoofing attack against an authenticated user.
Successful exploitation of the vulnerability may allow an attacker gain access to victim's account.
How to mitigate CVE-2019-1447
Install updates from vendor's website.