Videolabs libmicrodns 0.1.0 mDNS Message rr_decode Return Value double free

CVSS Meta Temp Score
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CTI Interest Score
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8.9$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Videolabs libmicrodns 0.1.0. This issue affects the function rr_decode of the component mDNS Message Handler. This manipulation as part of Return Value causes double free. This vulnerability appears as CVE-2020-6072. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Videolabs libmicrodns 0.1.0. It has been declared as critical. Affected by this vulnerability is the function rr_decode of the component mDNS Message Handler. The manipulation as part of a Return Value leads to a double free vulnerability. The CWE definition for the vulnerability is CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An exploitable code execution vulnerability exists in the label-parsing functionality of Videolabs libmicrodns 0.1.0. When parsing compressed labels in mDNS messages, the rr_decode function's return value is not checked, leading to a double free that could be exploited to execute arbitrary code. An attacker can send an mDNS message to trigger this vulnerability.

The weakness was presented 03/24/2020. This vulnerability is known as CVE-2020-6072 since 01/07/2020. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 214737 (Ubuntu 18.04 LTS : libmicrodns vulnerabilities (USN-7239-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.1.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (214737). See VDB-152237, VDB-152236, VDB-152235 and VDB-152234 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 8.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector (Talos): 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 214737
Nessus Name: Ubuntu 18.04 LTS : libmicrodns vulnerabilities (USN-7239-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libmicrodns 0.1.2

Timelineinfo

01/07/2020 🔍
03/24/2020 +77 days 🔍
03/25/2020 +1 days 🔍
05/05/2026 +2232 days 🔍

Sourcesinfo

Advisory: talosintelligence.com
Status: Confirmed

CVE: CVE-2020-6072 (🔍)
GCVE (CVE): GCVE-0-2020-6072
GCVE (VulDB): GCVE-100-152233
See also: 🔍

Entryinfo

Created: 03/25/2020 11:03
Updated: 05/05/2026 11:50
Changes: 03/25/2020 11:03 (38), 03/25/2020 11:08 (17), 05/11/2024 10:20 (17), 05/11/2024 10:25 (12), 01/29/2025 06:32 (2), 05/05/2026 11:47 (2), 05/05/2026 11:50 (7)
Complete: 🔍
Committer: lywand
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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