CVE-2022-20821
Cisco IOS XR Open Port Vulnerability
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
YesDecision
Descriptions
A vulnerability in the health check RPM of Cisco IOS XR Software could allow an unauthenticated, remote attacker to access the Redis instance that is running within the NOSi container. This vulnerability exists because the health check RPM opens TCP port 6379 by default upon activation. An attacker could exploit this vulnerability by connecting to the Redis instance on the open port. A successful exploit could allow the attacker to write to the Redis in-memory database, write arbitrary files to the container filesystem, and retrieve information about the Redis database. Given the configuration of the sandboxed container that the Redis instance runs in, a remote attacker would be unable to execute remote code or abuse the integrity of the Cisco IOS XR Software host system.
Una vulnerabilidad en el RPM de comprobación de salud del software Cisco IOS XR podría permitir a un atacante remoto no autenticado acceder a la instancia de Redis que es ejecutado dentro del contenedor NOSi. Esta vulnerabilidad se presenta porque el RPM de comprobación de salud abre el puerto TCP 6379 por defecto al activarse. Un atacante podría explotar esta vulnerabilidad al conectarse a la instancia de Redis en el puerto abierto. Una explotación con éxito podría permitir al atacante escribir en la base de datos en memoria de Redis, escribir archivos arbitrarios en el sistema de archivos del contenedor y recuperar información sobre la base de datos de Redis. Dada la configuración del contenedor con sandbox en el que es ejecutada la instancia de Redis, un atacante remoto no podría ejecutar código remoto ni abusar de la integridad del sistema anfitrión del software Cisco IOS XR
Cisco IOS XR software health check opens TCP port 6379 by default on activation. An attacker can connect to the Redis instance on the open port and allow access to the Redis instance that is running within the NOSi container.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-11-02 CVE Reserved
- 2022-05-23 Exploited in Wild
- 2022-05-26 CVE Published
- 2022-06-13 KEV Due Date
- 2023-12-17 EPSS Updated
- 2024-09-17 CVE Updated
- ---------- First Exploit
CWE
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CAPEC
References (1)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 8201 Search vendor "Cisco" for product "8201" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 8202 Search vendor "Cisco" for product "8202" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 8208 Search vendor "Cisco" for product "8208" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 8212 Search vendor "Cisco" for product "8212" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | 8218 Search vendor "Cisco" for product "8218" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs-55a1-24h Search vendor "Cisco" for product "Ncs-55a1-24h" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs-55a1-24q6h-s Search vendor "Cisco" for product "Ncs-55a1-24q6h-s" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs-55a1-36h-s Search vendor "Cisco" for product "Ncs-55a1-36h-s" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs-55a1-36h-se Search vendor "Cisco" for product "Ncs-55a1-36h-se" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs-55a1-36h-se-s Search vendor "Cisco" for product "Ncs-55a1-36h-se-s" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs-55a2-mod-hd-s Search vendor "Cisco" for product "Ncs-55a2-mod-hd-s" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs-55a2-mod-hx-s Search vendor "Cisco" for product "Ncs-55a2-mod-hx-s" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs-55a2-mod-s Search vendor "Cisco" for product "Ncs-55a2-mod-s" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs-55a2-mod-se-h-s Search vendor "Cisco" for product "Ncs-55a2-mod-se-h-s" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs-55a2-mod-se-s Search vendor "Cisco" for product "Ncs-55a2-mod-se-s" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs 1001 Search vendor "Cisco" for product "Ncs 1001" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs 1002 Search vendor "Cisco" for product "Ncs 1002" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs 1004 Search vendor "Cisco" for product "Ncs 1004" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs 5001 Search vendor "Cisco" for product "Ncs 5001" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs 5002 Search vendor "Cisco" for product "Ncs 5002" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs 5501-se Search vendor "Cisco" for product "Ncs 5501-se" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs 5502-se Search vendor "Cisco" for product "Ncs 5502-se" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs 5504 Search vendor "Cisco" for product "Ncs 5504" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs 5508 Search vendor "Cisco" for product "Ncs 5508" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs 5516 Search vendor "Cisco" for product "Ncs 5516" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs 55a1 Search vendor "Cisco" for product "Ncs 55a1" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | - | - |
Affected
| in | Cisco Search vendor "Cisco" | Ncs 55a2 Search vendor "Cisco" for product "Ncs 55a2" | - | - |
Safe
|