Videolabs libmicrodns 0.1.0 mdns_read_header Return Value null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Videolabs libmicrodns 0.1.0. The impacted element is the function mdns_read_header. Executing a manipulation as part of Return Value can lead to null pointer dereference. This vulnerability is handled as CVE-2020-6078. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic was found in Videolabs libmicrodns 0.1.0. This vulnerability affects the function mdns_read_header. The manipulation as part of a Return Value leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

An exploitable denial-of-service vulnerability exists in the message-parsing functionality of Videolabs libmicrodns 0.1.0. When parsing mDNS messages in mdns_recv, the return value of the mdns_read_header function is not checked, leading to an uninitialized variable usage that eventually results in a null pointer dereference, leading to service crash. An attacker can send a series of mDNS messages to trigger this vulnerability.

The weakness was released 03/24/2020. This vulnerability was named CVE-2020-6078 since 01/07/2020. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, 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). Entries connected to this vulnerability are available at VDB-152238, VDB-152237, VDB-152235 and VDB-152234. Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector (Talos): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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-2020-6078 (🔍)
GCVE (CVE): GCVE-0-2020-6078
GCVE (VulDB): GCVE-100-152236
See also: 🔍

Entryinfo

Created: 03/25/2020 11:03
Updated: 05/05/2026 11:50
Changes: 03/25/2020 11:03 (37), 03/25/2020 11:08 (17), 05/11/2024 10:54 (17), 05/11/2024 11:00 (12), 01/29/2025 06:32 (3), 05/05/2026 11:47 (2), 05/05/2026 11:50 (6)
Complete: 🔍
Committer: lywand
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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