Vulnerability · Published Mar 24, 2020 · Assigned by talos
CVE-2020-6080
High 7.5
In plain English
A high-severity security flaw in Videolabs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.4% (higher than 84% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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 the function rr_read_RR [5] reads the current resource record, except for the RDATA section. This is read by the loop at in rr_read. For each RR type, a different function is called. When the RR type is 0x10, the function rr_read_TXT is called at [6].
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | libmicrodns | 0.2.0-1 | DEBIAN-CVE-2020-6080 |
| Debian:14 | libmicrodns | 0.2.0-1 | DEBIAN-CVE-2020-6080 |
| Debian:12 | vlc | 3.0.8-4 | DEBIAN-CVE-2020-6080 |
| Debian:13 | vlc | 3.0.8-4 | DEBIAN-CVE-2020-6080 |
| Debian:14 | vlc | 3.0.8-4 | DEBIAN-CVE-2020-6080 |
Affected products (as reported)
References
- DSA-4671 vendor-advisory, x_refsource_DEBIAN
- GLSA-202005-10 vendor-advisory, x_refsource_GENTOO
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1002 x_refsource_MISC