Resource exhaustion in Siemens Simatic Net Cp 343-1 Advanced
CVE-2020-25242
A vulnerability has been identified in SIMATIC NET CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC NET CP 343-1 Lean (incl. SIPLUS variants) (All versions), SIMATIC NET CP 343-1 Standard (incl. SIPLUS variants) (All versions). Specially crafted packets sent to TCP port 102 could cause a Denial-of-Service condition on the affected devices. A cold restart might be necessary in order to recover.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.013 (66.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Siemens Simatic_net_cp_343-1_advanced
- Siemens Simatic_net_cp_343-1_advanced_firmware
- Siemens Simatic Net Cp 343-1 Advanced (Incl. Siplus Variants) — versions All versions
- Siemens Simatic_net_cp_343-1_lean
- Siemens Simatic_net_cp_343-1_lean_firmware
- Siemens Simatic Net Cp 343-1 Lean (Incl. Siplus Variants) — versions All versions
- Siemens Simatic_net_cp_343-1_standard
- Siemens Simatic_net_cp_343-1_standard_firmware
- Siemens Simatic Net Cp 343-1 Standard (Incl. Siplus Variants) — versions All versions
Weakness classification (CWE)
References
- productcert@siemens.com (x_refsource_CONFIRM, Vendor Advisory)
- productcert@siemens.com (US Government Resource, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-25242?
- CVE-2020-25242 is a high-severity vulnerability in Siemens Simatic Net Cp 343-1 Advanced, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2021-05-12.
- How severe is CVE-2020-25242?
- High severity. CVSS v3 base score is 7.5 out of 10.