#VU47123 Information disclosure in PowerDNS Authoritative - CVE-2020-17482

Vulnerability identifier: #VU47123

Vulnerability risk: Medium

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-17482

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PowerDNS Authoritative
Server applications / DNS servers

Vendor: PowerDNS.COM B.V.

Description

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote user with the ability to insert crafted records into a zone might be able to leak the content of uninitialized memory. Such a user could be a customer inserting data via a control panel, or somebody with access to the REST API.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

PowerDNS Authoritative: 4.0.0 - 4.0.9, 4.1.0 - 4.1.13, 4.2.0 - 4.2.2, 4.3.0

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External links
https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-2020-05.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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