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].

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://security.gentoo.org/glsa/202005-10	Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1002	Exploit Technical Description Third Party Advisory
https://www.debian.org/security/2020/dsa-4671	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:videolabs:libmicrodns:0.1.0:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:9.0:::::::*
	cpe:2.3:o:debian:debian_linux:10.0:::::::*

History

No history.

Information

Published : 2020-03-24 21:15

Updated : 2024-02-28 17:47

NVD link : CVE-2020-6080

Mitre link : CVE-2020-6080

CVE.ORG link : CVE-2020-6080

JSON object : View

Products Affected

debian

debian_linux

videolabs

libmicrodns

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

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