CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
6.8 | $5k-$25k | 0.14 |
A vulnerability was found in Cisco IOS XR 7.3.3 (Router Operating System). It has been rated as critical. This issue affects some unknown processing of the component Health Check. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability.
The weakness was released 05/24/2022 as cisco-sa-iosxr-redis-ABJyE5xK. It is possible to read the advisory at tools.cisco.com. The identification of this vulnerability is CVE-2022-20821. Technical details are unknown but an exploit is available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/26/2024). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.
It is declared as highly functional. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 05/23/2022 with a due date of 06/13/2022:
Apply updates per vendor instructions.
Upgrading to version 7.3.4 eliminates this vulnerability.
Product
Type
Vendor
Name
Version
License
Support
- end of life (old version)
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.9VulDB Meta Temp Score: 6.8
VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
CNA Base Score: 6.5
CNA Vector (Cisco Systems, Inc.): 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Access controlCWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Highly functional
EPSS Score: 🔍
EPSS Percentile: 🔍
KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: IOS XR 7.3.4
Timeline
11/02/2021 🔍05/24/2022 🔍
05/24/2022 🔍
04/26/2024 🔍
Sources
Vendor: cisco.comAdvisory: cisco-sa-iosxr-redis-ABJyE5xK
Status: Confirmed
CVE: CVE-2022-20821 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20150108
Entry
Created: 05/24/2022 06:56Updated: 04/26/2024 10:43
Changes: 05/24/2022 06:56 (40), 05/29/2022 10:19 (2), 05/29/2022 10:25 (12), 04/26/2024 10:43 (26)
Complete: 🔍
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