Resource exhaustion in SIMATIC S7-300 and SINUMERIK 840D sl - CVE-2019-18336
Published: March 10, 2020
Vulnerability identifier: #VU25862
CSH Severity: Medium
CVSS v4.0: 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-2019-18336
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Siemens
Affected software:
SIMATIC S7-300
SINUMERIK 840D sl
SIMATIC S7-300
SINUMERIK 840D sl
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper resource management when processing packets sent to Port 102/TCP (Profinet). A remote attacker can send specially crafted packets, trigger resource exhaustion and perform a denial of service (DoS) attack.
How to mitigate CVE-2019-18336
Install updates from vendor's website.