An exploitable denial-of-service vulnerability exists in the resource allocation handling of Videolabs libmicrodns 0.1.0. When encountering errors while parsing mDNS messages, some allocated data is not freed, possibly leading to a denial-of-service condition via resource exhaustion. An attacker can send one mDNS message repeatedly to trigger this vulnerability through decoding of the domain name performed by rr_decode.
The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
| Link | Tags |
|---|---|
| https://www.debian.org/security/2020/dsa-4671 | third party advisory vendor advisory |
| https://security.gentoo.org/glsa/202005-10 | third party advisory vendor advisory |
| https://talosintelligence.com/vulnerability_reports/TALOS-2020-1002 | exploit third party advisory technical description |