CVE-2021-37698
Missing TLS service certificate validation in GelfWriter, ElasticsearchWriter, InfluxdbWriter and Influxdb2Writer
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. In versions 2.5.0 through 2.13.0, ElasticsearchWriter, GelfWriter, InfluxdbWriter and Influxdb2Writer do not verify the server's certificate despite a certificate authority being specified. Icinga 2 instances which connect to any of the mentioned time series databases (TSDBs) using TLS over a spoofable infrastructure should immediately upgrade to version 2.13.1, 2.12.6, or 2.11.11 to patch the issue. Such instances should also change the credentials (if any) used by the TSDB writer feature to authenticate against the TSDB. There are no workarounds aside from upgrading.
Icinga es un sistema de monitorización que comprueba la disponibilidad de los recursos de red, notifica a usuarios de las interrupciones y genera datos de rendimiento para la elaboración de informes. En las versiones 2.5.0 a 2.13.0, los parámetros ElasticsearchWriter, GelfWriter, InfluxdbWriter e Influxdb2Writer no verifican el certificado del servidor a pesar de que se haya especificado una autoridad de certificación. Las instancias de Icinga 2 que se conectan a cualquiera de las bases de datos de series temporales (TSDB) mencionadas usando TLS sobre una infraestructura falsificable deben actualizar inmediatamente a versiones 2.13.1, 2.12.6 o 2.11.11 para solucionar el problema. Dichas instancias también deben cambiar las credenciales (si las presenta) usadas por la funcionalidad TSDB writer para autenticarse contra la TSDB. No se presentan soluciones aparte de la actualización.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-07-29 CVE Reserved
- 2021-08-19 CVE Published
- 2024-08-04 CVE Updated
- 2024-09-05 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-295: Improper Certificate Validation
CAPEC
References (5)
| URL | Tag | Source |
|---|---|---|
| https://github.com/Icinga/icinga2/releases/tag/v2.11.11 | Release Notes | |
| https://github.com/Icinga/icinga2/releases/tag/v2.12.6 | Release Notes | |
| https://github.com/Icinga/icinga2/releases/tag/v2.13.1 | Release Notes | |
| https://github.com/Icinga/icinga2/security/advisories/GHSA-cxfm-8j5v-5qr2 | Third Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2021/11/msg00010.html | Mailing List |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Icinga Search vendor "Icinga" | Icinga Search vendor "Icinga" for product "Icinga" | >= 2.5.0 < 2.11.10 Search vendor "Icinga" for product "Icinga" and version " >= 2.5.0 < 2.11.10" | - |
Affected
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| Icinga Search vendor "Icinga" | Icinga Search vendor "Icinga" for product "Icinga" | >= 2.12.0 < 2.12.6 Search vendor "Icinga" for product "Icinga" and version " >= 2.12.0 < 2.12.6" | - |
Affected
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| Icinga Search vendor "Icinga" | Icinga Search vendor "Icinga" for product "Icinga" | >= 2.13.0 < 2.13.1 Search vendor "Icinga" for product "Icinga" and version " >= 2.13.0 < 2.13.1" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
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