#VU75037 Deadlock in Siemens products - CVE-2022-43767

Vulnerability identifier: #VU75037

Vulnerability risk: 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-2022-43767

CWE-ID: CWE-833

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
SIMATIC CP 1242-7 V2
SIMATIC CP 1243-1
SIMATIC CP 1243-1 DNP3
SIMATIC CP 1243-1 IEC
SIMATIC CP 1243-7 LTE EU
SIMATIC CP 1243-7 LTE US
SIMATIC CP 1243-8 IRC
SIMATIC CP 1542SP-1
SIMATIC CP 1542SP-1 IRC
SIMATIC CP 1543SP-1
SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL
SIPLUS ET 200SP CP 1543SP-1 ISEC
SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL
SIPLUS NET CP 1242-7 V2
SIPLUS S7-1200 CP 1243-1
SIPLUS S7-1200 CP 1243-1 RAIL
SIMATIC CP 443-1
SIPLUS NET CP 443-1
SIPLUS NET CP 443-1 Advanced
SIPLUS TIM 1531 IRC
TIM 1531 IRC
SIMATIC IPC DiagBase
SIMATIC IPC DiagMonitor
SIMATIC CP 443-1 Advanced

Software vendor:
Siemens

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a deadlock issue in webserver. A remote attacker can cause a denial of service condition on the target system.

Install updates from vendor's website.

• https://cert-portal.siemens.com/productcert/pdf/ssa-566905.pdf