6.8

CVE-2021-3672

Exploit

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.

Data is provided by the National Vulnerability Database (NVD)
C-ares Project ≫ C-ares Version >= 1.0.0 < 1.17.2
Fedoraproject ≫ Fedora Version33
Fedoraproject ≫ Fedora Version34
Redhat ≫ Enterprise Linux Version7.0
Redhat ≫ Enterprise Linux Version7.7
Redhat ≫ Enterprise Linux Version8.0
Redhat ≫ Enterprise Linux Eus Version7.7
Redhat ≫ Enterprise Linux Eus Version8.1
Redhat ≫ Enterprise Linux Eus Version8.2
Redhat ≫ Enterprise Linux Eus Version8.4
Redhat ≫ Enterprise Linux Tus Version8.4
Nodejs ≫ Node.Js SwEdition- Version >= 12.0.0 <= 12.12.0
Nodejs ≫ Node.Js SwEditionlts Version >= 12.13.0 < 12.22.5
Nodejs ≫ Node.Js SwEdition- Version >= 14.0.0 <= 14.14.0
Nodejs ≫ Node.Js SwEditionlts Version >= 14.15.0 < 14.17.5
Nodejs ≫ Node.Js SwEdition- Version >= 16.0.0 < 16.6.2
Pgbouncer ≫ Pgbouncer Version <= 1.17.0
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.11% 0.305
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 5.6 2.2 3.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
nvd@nist.gov 6.8 8.6 6.4
AV:N/AC:M/Au:N/C:P/I:P/A:P
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

https://bugzilla.redhat.com/show_bug.cgi?id=1988342
Third Party Advisory
Issue Tracking
https://c-ares.haxx.se/adv_20210810.html
Patch
Vendor Advisory
Exploit