Vulnerability identifier: #VU52368

Vulnerability risk: Low

CVSSv3.1: 7.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2021-29449

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
Pi-hole
Web applications / Modules and components for CMS

Vendor: Pi-hole

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in the RemoveCustomCNAMERecord, RemoveCustomDNSAddress and RemoveDHCPStaticAddress functions. A local user can gain elevated privileges on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Pi-hole: 2.0 - 5.2.4

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External links
http://github.com/pi-hole/pi-hole/security/advisories/GHSA-3597-244c-wrpj

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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. However, a fully functional exploit for this vulnerability is available.