### [CVE-2021-31882](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31882)
![](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=Version&message=0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-119%3A%20Improper%20Restriction%20of%20Operations%20within%20the%20Bounds%20of%20a%20Memory%20Buffer&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). The DHCP client application does not validate the length of the Domain Name Server IP option(s) (0x06) when processing DHCP ACK packets. This may lead to Denial-of-Service conditions. (FSMD-2021-0011)

### POC

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

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