#VU52204 Improper Null Termination in SIMOTICS CONNECT 400 - CVE-2020-27736
Published: April 14, 2021
Vulnerability identifier: #VU52204
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-27736
CWE-ID: CWE-170
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
SIMOTICS CONNECT 400
SIMOTICS CONNECT 400
Software vendor:
Siemens
Siemens
Description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the DNS domain name label parsing functionality does not properly validate the null-terminated name in DNS-responses. A remote attacker can cause a denial of service condition or leak the read memory.
Remediation
Install updates from vendor's website.