CVE-2021-25664
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 the Hop-by-Hop extension header in IPv6 packets and its options lacks any checks against the length field of the header, allowing attackers to put the function into an infinite loop by supplying arbitrary length values.
How to fix
- siemens nucleus_readystart_v32017.02.4 or later
- siemens nucleus_readystart_v44.1.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| siemens capital_vstar | No range specified | — |
| siemens nucleus_net | No range specified | — |
| siemens nucleus_readystart_v3 | v < 2017.02.4 | 2017.02.4 |
| siemens nucleus_readystart_v4 | v < 4.1.0 | 4.1.0 |
| siemens nucleus_source_code | No range specified | — |
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