CVE-2021-3672
c-ares: Missing input validation of host names may lead to domain hijacking
Severity Score
5.6
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track
*SSVC
Descriptions
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.
Se ha encontrado un fallo en la biblioteca c-ares, en la que una falta de comprobación de la comprobación de entrada de los nombres de host devueltos por los DNS (Servidores de Nombres de Dominio) puede conllevar a una salida de nombres de host erróneos, que podría conllevar potencialmente a un Secuestro de Dominios. La mayor amenaza de esta vulnerabilidad es para la confidencialidad e integridad, así como para la disponibilidad del sistema
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-07-30 CVE Reserved
- 2021-08-10 CVE Published
- 2024-10-15 CVE Updated
- 2024-10-15 EPSS Updated
- 2024-10-15 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC
References (6)
| URL | Tag | Source |
|---|---|---|
| https://www.oracle.com/security-alerts/cpujul2022.html | Third Party Advisory |
|
| URL | Date | SRC |
|---|---|---|
| https://c-ares.haxx.se/adv_20210810.html | 2024-10-15 |
| URL | Date | SRC |
|---|---|---|
| https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf | 2024-01-05 |
| URL | Date | SRC |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1988342 | 2022-05-10 | |
| https://security.gentoo.org/glsa/202401-02 | 2024-01-05 | |
| https://access.redhat.com/security/cve/CVE-2021-3672 | 2022-05-10 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| C-ares Project Search vendor "C-ares Project" | C-ares Search vendor "C-ares Project" for product "C-ares" | >= 1.0.0 < 1.17.2 Search vendor "C-ares Project" for product "C-ares" and version " >= 1.0.0 < 1.17.2" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 33 Search vendor "Fedoraproject" for product "Fedora" and version "33" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 34 Search vendor "Fedoraproject" for product "Fedora" and version "34" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 7.7 Search vendor "Redhat" for product "Enterprise Linux" and version "7.7" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Computer Node Search vendor "Redhat" for product "Enterprise Linux Computer Node" | 1 Search vendor "Redhat" for product "Enterprise Linux Computer Node" and version "1" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus" | 7.7 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "7.7" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus" | 8.1 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "8.1" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus" | 8.2 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "8.2" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus" | 8.4 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "8.4" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux For Ibm Z Systems Search vendor "Redhat" for product "Enterprise Linux For Ibm Z Systems" | 8.0 Search vendor "Redhat" for product "Enterprise Linux For Ibm Z Systems" and version "8.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux For Ibm Z Systems Eus Search vendor "Redhat" for product "Enterprise Linux For Ibm Z Systems Eus" | 8.1 Search vendor "Redhat" for product "Enterprise Linux For Ibm Z Systems Eus" and version "8.1" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux For Ibm Z Systems Eus Search vendor "Redhat" for product "Enterprise Linux For Ibm Z Systems Eus" | 8.2 Search vendor "Redhat" for product "Enterprise Linux For Ibm Z Systems Eus" and version "8.2" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux For Ibm Z Systems Eus Search vendor "Redhat" for product "Enterprise Linux For Ibm Z Systems Eus" | 8.4 Search vendor "Redhat" for product "Enterprise Linux For Ibm Z Systems Eus" and version "8.4" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux For Power Little Endian Search vendor "Redhat" for product "Enterprise Linux For Power Little Endian" | 8.0 Search vendor "Redhat" for product "Enterprise Linux For Power Little Endian" and version "8.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux For Power Little Endian Eus Search vendor "Redhat" for product "Enterprise Linux For Power Little Endian Eus" | 8.1 Search vendor "Redhat" for product "Enterprise Linux For Power Little Endian Eus" and version "8.1" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux For Power Little Endian Eus Search vendor "Redhat" for product "Enterprise Linux For Power Little Endian Eus" | 8.2 Search vendor "Redhat" for product "Enterprise Linux For Power Little Endian Eus" and version "8.2" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux For Power Little Endian Eus Search vendor "Redhat" for product "Enterprise Linux For Power Little Endian Eus" | 8.4 Search vendor "Redhat" for product "Enterprise Linux For Power Little Endian Eus" and version "8.4" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 8.2 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "8.2" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 8.4 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "8.4" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus" | 8.2 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "8.2" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus" | 8.4 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "8.4" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Update Services For Sap Solutions Search vendor "Redhat" for product "Enterprise Linux Server Update Services For Sap Solutions" | 8.1 Search vendor "Redhat" for product "Enterprise Linux Server Update Services For Sap Solutions" and version "8.1" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Update Services For Sap Solutions Search vendor "Redhat" for product "Enterprise Linux Server Update Services For Sap Solutions" | 8.2 Search vendor "Redhat" for product "Enterprise Linux Server Update Services For Sap Solutions" and version "8.2" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Server Update Services For Sap Solutions Search vendor "Redhat" for product "Enterprise Linux Server Update Services For Sap Solutions" | 8.4 Search vendor "Redhat" for product "Enterprise Linux Server Update Services For Sap Solutions" and version "8.4" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Tus Search vendor "Redhat" for product "Enterprise Linux Tus" | 8.4 Search vendor "Redhat" for product "Enterprise Linux Tus" and version "8.4" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation" | 1 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "1" | - |
Affected
| ||||||
| Siemens Search vendor "Siemens" | Sinec Infrastructure Network Services Search vendor "Siemens" for product "Sinec Infrastructure Network Services" | < 1.0.1.1 Search vendor "Siemens" for product "Sinec Infrastructure Network Services" and version " < 1.0.1.1" | - |
Affected
| ||||||
| Nodejs Search vendor "Nodejs" | Node.js Search vendor "Nodejs" for product "Node.js" | >= 12.0.0 <= 12.12.0 Search vendor "Nodejs" for product "Node.js" and version " >= 12.0.0 <= 12.12.0" | - |
Affected
| ||||||
| Nodejs Search vendor "Nodejs" | Node.js Search vendor "Nodejs" for product "Node.js" | >= 12.13.0 < 12.22.5 Search vendor "Nodejs" for product "Node.js" and version " >= 12.13.0 < 12.22.5" | lts |
Affected
| ||||||
| Nodejs Search vendor "Nodejs" | Node.js Search vendor "Nodejs" for product "Node.js" | >= 14.0.0 <= 14.14.0 Search vendor "Nodejs" for product "Node.js" and version " >= 14.0.0 <= 14.14.0" | - |
Affected
| ||||||
| Nodejs Search vendor "Nodejs" | Node.js Search vendor "Nodejs" for product "Node.js" | >= 14.15.0 < 14.17.5 Search vendor "Nodejs" for product "Node.js" and version " >= 14.15.0 < 14.17.5" | lts |
Affected
| ||||||
| Nodejs Search vendor "Nodejs" | Node.js Search vendor "Nodejs" for product "Node.js" | >= 16.0.0 < 16.6.2 Search vendor "Nodejs" for product "Node.js" and version " >= 16.0.0 < 16.6.2" | - |
Affected
| ||||||
| Pgbouncer Search vendor "Pgbouncer" | Pgbouncer Search vendor "Pgbouncer" for product "Pgbouncer" | <= 1.17.0 Search vendor "Pgbouncer" for product "Pgbouncer" and version " <= 1.17.0" | - |
Affected
| ||||||