CVE-2020-6078

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Summary

CVECVE-2020-6078
StatePUBLISHED
Assignertalos
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-03-24 21:15:14 UTC
Updated2026-10-08 22:17:01 UTC
DescriptionAn 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.031460000 probability, percentile 0.875820000 (date 2026-10-11)

Problem Types: CWE-252 | denial of service

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary5AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:L/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 10.0 All All All
Operating System Debian Debian Linux 9.0 All All All
Application Videolabs Libmicrodns 0.1.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Videolabs affected Videolabs libmicrodns 0.1.0 Not specified

References

ReferenceSourceLinkTags
TALOS-2020-1001 || Cisco Talos Intelligence Group - Comprehensive Threat Intelligence af854a3a-2127-422b-91ae-364da2661108 talosintelligence.com Exploit, Technical Description, Third Party Advisory
Debian -- Security Information -- DSA-4671-1 vlc af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
libmicrodns: Multiple vulnerabilities (GLSA 202005-10) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 501270 Alpine Linux Security Update for vlc
  • 505489 Alpine Linux Security Update for vlc

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