Vulnerability in Videolabs Libmicrodns
CVE-2020-6080
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].
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.024 (83.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000
Affected products
- Videolabs Libmicrodns — versions 0.1.0
- Debian Linux — versions 9.0, 10.0
- Videolabs — versions Videolabs libmicrodns 0.1.0
Weakness classification (CWE)
References
- www.debian.org/security/2020/dsa-4671 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202005-10 (vendor-advisory, Third Party Advisory)
- talosintelligence.com/vulnerability_reports/TALOS-2020-1002 (Technical Description, Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-6080?
- CVE-2020-6080 is a high-severity vulnerability in Videolabs Libmicrodns, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2020-03-24.
- How severe is CVE-2020-6080?
- High severity. CVSS v3 base score is 7.5 out of 10.