PT-2020-2143 · Videolabs+1 · Libmicrodns+1

Claudio Bozzato · Published 2020-03-24 · Updated 2025-01-28 · CVE-2020-6071

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Videolabs libmicrodns version 0.1.0

Description A denial-of-service issue exists in the resource record-parsing functionality of libmicrodns. When parsing compressed labels in mDNS messages, the compression pointer is followed without checking for recursion, leading to a denial of service. An attacker can send an mDNS message to trigger this issue. The vulnerability is also related to a buffer overflow in memory, which can be exploited by a remote attacker to cause a denial of service or potentially execute arbitrary code using a specially crafted request.

Recommendations For libmicrodns version 0.1.0, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Uncontrolled Recursion

Buffer Overflow

Weakness Enumeration

CWE-674

CWE-119

Related Identifiers

BDU:2020-02047

CVE-2020-6071

DSA-4671-1

MGASA-2020-0203

USN-7239-1

Affected Products

Ubuntu

Libmicrodns

References · 31

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2020-0994 · Exploit
• https://ubuntu.com/security/CVE-2020-6072 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-02047 · Security Note
• https://security.gentoo.org/glsa/202005-10 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7239-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-6071 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-6071 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-6071 · Security Note
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20210611SE16 · Vendor Advisory
• https://debian.org/security/2020/dsa-4671 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4671-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-6071 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2020-0203.html · Security Note
• https://ubuntu.com/security/CVE-2020-6077 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-6079 · Vendor Advisory