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.
| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| CVE-2022-20821 | Cisco IOS XR Open Port Vulnerability | exploitation_technique | T1190 | Exploit Public-Facing Application |
Comments
This vulnerability is exploited by an unauthenticated, remote user who can access the Redis instance via port 6379 due to a health check RPM issue in IOS XR software. A successful exploitation of this vulnerability could allow an attacker the ability to write to the Redis in-memory database, write arbitrary files to the file system, or retrieve information about the Redis database. This vulnerability has been identified as being exploited in the wild, but specific details have not been released.
References
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