#VU11203 Improper input validation in Siemens products - CVE-2018-4843
Published: March 20, 2018 / Updated: March 22, 2018
Vulnerability identifier: #VU11203
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-4843
CWE-ID: CWE-20
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
SIMATIC S7-300
SIMATIC WinAC RTX 2010
SIMATIC S7-410
Softnet PROFINET IO for PC-based Windows systems
SINUMERIK 828D
SIMATIC S7-400 PN/DP V7
SIMATIC S7-400 PN/DP V6
SIMATIC S7-400 H
SIMATIC S7-1500 Software Controller
SIMATIC CP 443-1 Standard
SIMATIC CP 443-1 Advanced
SIMATIC CP 343-1 Standard
SIMATIC CP 343-1 Advanced
SIMATIC S7-300
SIMATIC WinAC RTX 2010
SIMATIC S7-410
Softnet PROFINET IO for PC-based Windows systems
SINUMERIK 828D
SIMATIC S7-400 PN/DP V7
SIMATIC S7-400 PN/DP V6
SIMATIC S7-400 H
SIMATIC S7-1500 Software Controller
SIMATIC CP 443-1 Standard
SIMATIC CP 443-1 Advanced
SIMATIC CP 343-1 Standard
SIMATIC CP 343-1 Advanced
Software vendor:
Siemens
Siemens
Description
The vulnerability allows an adjacent attacker to cause DoS condition on the target system.
The weakness exists due to insufficient validation of user-supplied input. An attacker that is located on the same Ethernet segment (OSI Layer 2) as the targeted device can respond to a PROFINET DCP request with a specially crafted PROFINET DCP packet and cause denial of service.
The weakness exists due to insufficient validation of user-supplied input. An attacker that is located on the same Ethernet segment (OSI Layer 2) as the targeted device can respond to a PROFINET DCP request with a specially crafted PROFINET DCP packet and cause denial of service.
Remediation
Install update from vendor's website.