Description
A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (All versions including affected IPv6 stack). The function that processes IPv6 headers does not check the lengths of extension header options, allowing attackers to put this function into an infinite loop with crafted length values.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Siemens | Capital Embedded AR Classic 431-422 | — | — |
| Siemens | Capital Embedded AR Classic R20-11 | < V2303 | V2303 |
| Siemens | Nucleus NET | All versions | — |
| Siemens | Nucleus ReadyStart V3 | < V2017.02.4 | V2017.02.4 |
| Siemens | Nucleus ReadyStart V4 | < V4.1.0 | V4.1.0 |
| Siemens | Nucleus Source Code | — | — |
Advisories 3
- ICSA-21-103-05 Siemens Nucleus Products IPv6 Stack CISA ICS & IT advisories · Mar 11, 2025
- SSA-248289 SSA-248289: Denial of Service Vulnerabilities in the IPv6 Stack of Nucleus RTOS Siemens ProductCERT · Mar 11, 2025
- WID-SEC-2023-1986 NAME:WRECK: Mehrere Schwachstellen in TCP/IP Stacks BSI CERT-Bund (WID) · Feb 12, 2024