CVE-2021-25663
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductSiemens Capital Vstar
PublishedApr 22, 2021
First seenApr 22, 2021
Weakness typeCWE-835CWE-835
How to fix
Update
- siemens nucleus_readystart4.1.0, 2017.02.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| siemens capital_vstar | No range specified | — |
| siemens nucleus_net | No range specified | — |
| siemens nucleus_readystart | v < 4.1.0, v < 2017.02.4 | 4.1.0, 2017.02.4 |
| siemens nucleus_source_code | No range specified | — |
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