CVE-2022-20821
CVSS V2 Medium 6.4
CVSS V3 Medium 6.5
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.
Overview
- CVE ID
- CVE-2022-20821
- Assigner
- ykramarz@cisco.com
- Vulnerability Status
- Analyzed
- Published Version
- 2022-05-26T14:15:08
- Last Modified Date
- 2022-06-07T16:51:09
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:o:cisco:ios_xr:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:cisco:8201:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:8202:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:8208:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:8212:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:8218:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs-55a1-24h:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs-55a1-24q6h-s:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs-55a1-36h-s:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs-55a1-36h-se:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs-55a1-36h-se-s:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs-55a2-mod-hd-s:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs-55a2-mod-hx-s:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs-55a2-mod-s:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs-55a2-mod-se-h-s:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs-55a2-mod-se-s:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_1001:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_1002:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_1004:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5001:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5002:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5504:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_55a1:-:*:*:*:*:*:*:* | 0 | OR | ||
| cpe:2.3:h:cisco:ncs_55a2:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 6.4
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- NONE
- Base Score
- 6.5
- Base Severity
- MEDIUM
- Exploitability Score
- 3.9
- Impact Score
- 2.5
References
| Reference URL | Reference Tags |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-redis-ABJyE5xK |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2022-20821 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-20821 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-26 15:00:09 | Added to TrackCVE |