Vulnerability · Published Jun 29, 2021 · Assigned by zdi

CVE-2021-31505

Medium 6.8

In plain English

A medium-severity hard-coded credentials in Q Plus from Arlo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities).

Severity (CVSS 3.0)6.8Medium

Exploit odds (30 days)0.6%top 53.8% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Arlo	Q Plus	1.9.0.3_278

Weakness: CWE-798 · Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://www.zerodayinitiative.com/advisories/ZDI-21-683/ x_refsource_MISC
https://kb.arlo.com/000062592/Security-Advisory-for-Arlo-Q-Plus-SSH-Use-of-Hard-coded-Credentials-Allowing-Privilege-Escalation x_refsource_MISC