#VU51527 Input validation error in GE products - CVE-2021-27420

Vulnerability identifier: #VU51527

Vulnerability risk: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2021-27420

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
B30
C30
C60
C70
C95
D30
D60
F35
F60
G30
G60
L30
L60
L90
M60
N60
T35
T60

Software vendor:
GE

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the UR Firmware web server task does not properly handle receipt of unsupported HTTP verbst. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://ics-cert.us-cert.gov/advisories/icsa-21-075-02