CVE-2020-6078
critical
CVSS v3
—
CVSS v2
—
VIR risk
9.5
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-6078
Vendor advisory: arch — https://security.archlinux.org/ASA-202004-24
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 0.1.2-1 | |
| debian | forky | fixed | 0.2.0-1 |
| debian | sid | fixed | 0.2.0-1 |
| debian | trixie | fixed | 0.2.0-1 |
| debian | bookworm | fixed | 3.0.8-4 |
| debian | bullseye | fixed | 3.0.8-4 |
References
Verify integrity in audit chain (admin only). AS-IS.