CVE-2021-3672

A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to Domain Hijacking. The highest threat from this vulnerability is to confidentiality and integrity as well as system availability.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.6 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
redhatCNA
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CVEADP
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 21%
VendorProductVersion
c-ares_projectc-ares
1.0.0 ≤
𝑥
< 1.17.2
redhatenterprise_linux
7.0
redhatenterprise_linux
7.7
redhatenterprise_linux
8.0
redhatenterprise_linux_eus
7.7
redhatenterprise_linux_eus
8.1
redhatenterprise_linux_eus
8.2
redhatenterprise_linux_eus
8.4
redhatenterprise_linux_for_ibm_z_systems
8.0
redhatenterprise_linux_for_ibm_z_systems_eus
8.1
redhatenterprise_linux_for_ibm_z_systems_eus
8.2
redhatenterprise_linux_for_ibm_z_systems_eus
8.4
redhatenterprise_linux_for_power_little_endian
8.0
redhatenterprise_linux_for_power_little_endian_eus
8.1
redhatenterprise_linux_for_power_little_endian_eus
8.2
redhatenterprise_linux_for_power_little_endian_eus
8.4
redhatenterprise_linux_server_aus
8.2
redhatenterprise_linux_server_aus
8.4
redhatenterprise_linux_server_tus
8.2
redhatenterprise_linux_server_tus
8.4
redhatenterprise_linux_server_update_services_for_sap_solutions
8.1
redhatenterprise_linux_server_update_services_for_sap_solutions
8.2
redhatenterprise_linux_server_update_services_for_sap_solutions
8.4
redhatenterprise_linux_tus
8.4
siemenssinec_infrastructure_network_services
𝑥
< 1.0.1.1
nodejsnode.js
12.0.0 ≤
𝑥
≤ 12.12.0
nodejsnode.js
12.13.0 ≤
𝑥
< 12.22.5
nodejsnode.js
14.0.0 ≤
𝑥
≤ 14.14.0
nodejsnode.js
14.15.0 ≤
𝑥
< 14.17.5
nodejsnode.js
16.0.0 ≤
𝑥
< 16.6.2
pgbouncerpgbouncer
𝑥
≤ 1.17.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
c-ares
bullseye (security)
1.17.1-1+deb11u3
fixed
bullseye
1.17.1-1+deb11u3
fixed
bookworm
1.18.1-3
fixed
sid
1.34.2-1
fixed
trixie
1.34.2-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
c-ares
jammy
Fixed 1.17.1-1ubuntu1
released
impish
Fixed 1.17.1-1ubuntu1
released
hirsute
Fixed 1.17.1-1ubuntu0.1
released
focal
Fixed 1.15.0-1ubuntu0.1
released
bionic
Fixed 1.14.0-1ubuntu0.1
released
xenial
Fixed 1.10.0-3ubuntu0.2+esm1
released
trusty
dne