PT-2022-2638 · Cisco · Cisco Ios Xr
Published
2022-05-20
·
Updated
2024-07-02
·
CVE-2022-20821
CVSS v3.1
6.5
Medium
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
Name of the Vulnerable Software and Affected Versions
Cisco IOS XR Software (affected versions not specified)
Description
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.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
As a temporary workaround, consider restricting access to the Redis instance on TCP port 6379 to minimize the risk of exploitation.
Restrict access to the NOSi container to minimize the risk of exploitation.
Avoid using the Redis database in the affected API endpoint until the issue is resolved.
Cisco has released software updates that address this vulnerability, it is recommended to apply these updates.
There are workarounds that address this vulnerability, it is recommended to apply these workarounds.
Information Disclosure
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Weakness Enumeration
Related Identifiers
Affected Products
Cisco Ios Xr