Resource exhaustion in Siemens products - CVE-2021-27385
Published: May 12, 2021
Vulnerability identifier: #VU53146
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-27385
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
SIMATIC HMI Comfort Outdoor Panels 7” & 15”
SIMATIC HMI Comfort Panels 4”-22”
SIMATIC HMI KTP400F
SIMATIC HMI KTP700
SIMATIC HMI KTP700F
SIMATIC HMI KTP900
SIMATIC HMI KTP900F
SIMATIC WinCC Runtime Advanced
SIMATIC HMI Comfort Outdoor Panels 7” & 15”
SIMATIC HMI Comfort Panels 4”-22”
SIMATIC HMI KTP400F
SIMATIC HMI KTP700
SIMATIC HMI KTP700F
SIMATIC HMI KTP900
SIMATIC HMI KTP900F
SIMATIC WinCC Runtime Advanced
Software vendor:
Siemens
Siemens
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can send specially crafted packets to a SmartVNC device layout handler on the client side, trigger resource exhaustion and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.