CVE-2020-6080
An exploitable denial-of-service vulnerability exists in the resource allocation handling of Videolabs libmicrodns 0.1.0.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.44%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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].
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.44% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-401
- Affected
- videolabs/libmicrodns · debian/debian linux
- Source
- talos-cna@cisco.com
References
- https://security.gentoo.org/glsa/202005-10Third Party Advisory
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1002Exploit, Technical Description, Third Party Advisory
- https://www.debian.org/security/2020/dsa-4671Third Party Advisory
- https://security.gentoo.org/glsa/202005-10Third Party Advisory
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1002Exploit, Technical Description, Third Party Advisory
- https://www.debian.org/security/2020/dsa-4671Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.