What’s Vulnerable › Vulnerabilities

CVE-2020-6078

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-03-24 · updated 2026-10-08
• Weakness: CWE-252

Description

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.

Affected products

• Debian Linux: 9.0, 10.0
• Videolabs Libmicrodns: 0.1.0

References

• https://security.gentoo.org/glsa/202005-10
• https://talosintelligence.com/vulnerability_reports/TALOS-2020-1001
• https://www.debian.org/security/2020/dsa-4671
• https://security.gentoo.org/glsa/202005-10
• https://talosintelligence.com/vulnerability_reports/TALOS-2020-1001
• https://www.debian.org/security/2020/dsa-4671

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