vulnerability
Arch Linux: Denial of service (CVE-2020-6078)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Mar 24, 2020 | Jul 11, 2025 | Nov 27, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Mar 24, 2020
Added
Jul 11, 2025
Modified
Nov 27, 2025
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.
Solution
arch-linux-upgrade-latest
References
- CVE-2020-6078
- https://attackerkb.com/topics/CVE-2020-6078
- URL-https://github.com/videolabs/libmicrodns/releases/tag/0.1.1
- URL-https://security.archlinux.org/ASA-202004-24
- URL-https://security.gentoo.org/glsa/202005-10
- URL-https://talosintelligence.com/vulnerability_reports/TALOS-2020-1001
- URL-https://www.debian.org/security/2020/dsa-4671
- CWE-252
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