CVE-2021-25663
First published: Thu Apr 22 2021(Updated: )
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.
Credit: productcert@siemens.com productcert@siemens.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Siemens Capital Vstar | ||
| Siemens Nucleus NET | ||
| Siemens Nucleus Readystart | <4.1.0 | |
| Siemens Nucleus Source Code | ||
| Siemens Nucleus Readystart | <2017.02.4 | |
| Siemens Capital VSTAR: Versions including the affected IPv6 stack | ||
| Siemens Nucleus NET | ||
| Siemens Nucleus ReadyStart v3 | <2017.02.4 | 2017.02.4 |
| Siemens Nucleus ReadyStart v4 | <4.1.0 | 4.1.0 |
| Siemens Nucleus Source Code: Versions including the affected IPv6 stack |
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Reference Links
Frequently Asked Questions
What is CVE-2021-25663?
CVE-2021-25663 is a vulnerability identified in Siemens Capital VSTAR, Nucleus NET, Nucleus ReadyStart V3, Nucleus ReadyStart V4, and Nucleus Source Code, which allows remote attackers to execute arbitrary code.
Which software versions are affected by CVE-2021-25663?
CVE-2021-25663 affects Siemens Capital VSTAR, Nucleus NET, Nucleus ReadyStart V3 (versions < V2017.02.4), Nucleus ReadyStart V4 (versions < V4.1.0), and Nucleus Source Code.
What is the severity of CVE-2021-25663?
CVE-2021-25663 has a severity rating of 7.5 (High).
How can an attacker exploit CVE-2021-25663?
Attackers can exploit CVE-2021-25663 by sending specially crafted packets to the affected software, allowing them to execute arbitrary code.
Are there any references for CVE-2021-25663?
Yes, you can find more information about CVE-2021-25663 at the following references: [Siemens ProductCERT](https://cert-portal.siemens.com/productcert/pdf/ssa-248289.pdf) and [US-CERT Advisory](https://us-cert.cisa.gov/ics/advisories/icsa-21-103-05).
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- vendor/siemens
- canonical/siemens capital vstar
- canonical/siemens nucleus net
- canonical/siemens nucleus readystart
- canonical/siemens nucleus source code
- canonical/siemens capital vstar: versions including the affected ipv6 stack
- canonical/siemens nucleus readystart v3
- canonical/siemens nucleus readystart v4
- canonical/siemens nucleus source code: versions including the affected ipv6 stack