CVEs-PoC/2021/CVE-2021-31890.md

### [CVE-2021-31890](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31890)
![](https://img.shields.io/static/v1?label=Product&message=Capital%20Embedded%20AR%20Classic%20431-422&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Capital%20Embedded%20AR%20Classic%20R20-11&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=PLUSCONTROL%201st%20Gen&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=SIMOTICS%20CONNECT%20400&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=All%20versions%20%3C%20V0.5.0.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=All%20versions%20%3C%20V1.0.0.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=All%20versions%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-240%3A%20Improper%20Handling%20of%20Inconsistent%20Structural%20Elements&color=brightgreen)

### Description

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), PLUSCONTROL 1st Gen (All versions), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), SIMOTICS CONNECT 400 (All versions < V1.0.0.0). The total length of an TCP payload (set in the IP header) is unchecked. This may lead to various side effects, including Information Leak and Denial-of-Service conditions, depending on the network buffer organization in memory. (FSMD-2021-0017)

### POC

#### Reference
- https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf

#### Github
No PoCs found on GitHub currently.