cve/2021/CVE-2021-31505.md

### [CVE-2021-31505](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31505)
![](https://img.shields.io/static/v1?label=Product&message=Q%20Plus&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-798%3A%20Use%20of%20Hard-coded%20Credentials&color=brighgreen)

### Description

This vulnerability allows attackers with physical access to escalate privileges on affected installations of Arlo Q Plus 1.9.0.3_278. Authentication is not required to exploit this vulnerability. The specific flaw exists within the SSH service. The device can be booted into a special operation mode where hard-coded credentials are accepted for SSH authentication. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-12890.

### POC

#### Reference
- https://kb.arlo.com/000062592/Security-Advisory-for-Arlo-Q-Plus-SSH-Use-of-Hard-coded-Credentials-Allowing-Privilege-Escalation

#### Github
- https://github.com/rdomanski/Exploits_and_Advisories