#VU28870 Input validation error in Windows and Windows Server - CVE-2020-1284
Published: June 9, 2020
Vulnerability identifier: #VU28870
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-1284
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Windows
Windows Server
Windows
Windows Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the way Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests.
To exploit the vulnerability against a server, an authenticated attacker can send a specially crafted packet to a targeted SMBv3 server. To exploit the vulnerability against a client, an unauthenticated attacker would need to configure malicious SMBv3 server and convince a user to connect to it.
Remediation
Install updates from vendor's website.