Vulnerability identifier: #VU26342

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6071

CWE-ID: CWE-674

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libmicrodns
Web applications / JS libraries

Vendor: Videolabs

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the compression pointer is followed without checking for recursion in the resource record-parsing functionality when parsing compressed labels in mDNS messages. A remote attacker can send a specially crafted mDNS message and cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libmicrodns: 0.1.0

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External links
http://www.talosintelligence.com/vulnerability_reports/TALOS-2020-0994

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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