Vulnerability Name:

CVE-2020-6078 (CCN-178272)

Assigned:2020-03-23
Published:2020-03-23
Updated:2022-04-22
Summary:An exploitable denial-of-service vulnerability exists in the message-parsing functionality of Videolabs libmicrodns 0.1.0. When parsing mDNS messages in mdns_recv, the return value of the mdns_read_header function is not checked, leading to an uninitialized variable usage that eventually results in a null pointer dereference, leading to service crash. An attacker can send a series of mDNS messages to trigger this vulnerability.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-252
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-6078

Source: XF
Type: UNKNOWN
videolabs-cve20206078-dos(178272)

Source: CCN
Type: Videolabs GIT Repository
GitHub - videolabs/libmicrodns: Minimal mDNS resolver (and announcer) cross-platform library

Source: GENTOO
Type: Third Party Advisory
GLSA-202005-10

Source: CCN
Type: Talos Vulnerability Report TALOS-2020-1001
Videolabs libmicrodns 0.1.0 mdns_recv return value denial-of-service vulnerability

Source: MISC
Type: Exploit, Technical Description, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1001

Source: DEBIAN
Type: Third Party Advisory
DSA-4671

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2020-6078

Vulnerable Configuration:Configuration 1:
  • cpe:/a:videolabs:libmicrodns:0.1.0:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:10.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:videolabs:libmicrodns:0.1.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    videolabs libmicrodns 0.1.0
    debian debian linux 9.0
    debian debian linux 10.0
    videolabs libmicrodns 0.1.0