Resource exhaustion in Siemens products - CVE-2019-13940
Published: February 12, 2020
Vulnerability identifier: #VU25258
CSH Severity: Medium
CVSS v4: 6.9 [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]
CVE-ID: CVE-2019-13940
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to uncontrolled resource consumption. A remote attacker can send a specially crafted HTTP request to Ports 80/TCP and 443/TCP, trigger resource exhaustion and perform a denial of service (DoS) attack on the web server.
Affected software
SIMATIC S7-400 PN/DP V6
SIMATIC S7-400 PN/DP V7
SIMATIC S7-300 PN/DP
SIMATIC S7-1200
SIMATIC S7-400 PN/DP V7
SIMATIC S7-300 PN/DP
SIMATIC S7-1200
How to mitigate CVE-2019-13940
Install updates from vendor's website.
SIMATIC S7-1200 - update to 4.1