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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade vlc | Jun 16, 2020 | Mar 24, 2020 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Mar 24, 2020 |
| Debian | — | Upgrade vlcUpgrade libmicrodns | May 4, 2020 | Mar 24, 2020 |
| Gentoo Linux | — | Upgrade net-libs/libmicrodns. | Jun 15, 2020 | Mar 24, 2020 |
| Ubuntu | — | Upgrade libmicrodns0 (Ubuntu Pro) | Jan 30, 2025 | Mar 24, 2020 |
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