AdGuardHome update for Go

1) Input validation error

EUVDB-ID: #VU69405

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-41716

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary OS commands on the system.

The vulnerability exists due to insecure processing of unsanitized NUL values in syscall.StartProcess and os/exec.Cmd. A local user on the Windows operating system can set a specially crafted environment variable and execute arbitrary OS commands on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

AdGuard Home: 0.107.0 - 0.108.0-b.19

External links

http://github.com/AdguardTeam/AdGuardHome/releases/tag/v0.108.0-b.20
http://github.com/AdguardTeam/AdGuardHome/releases/tag/v0.107.17

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.