# What is CVE-2021-2351?

> CVE-2021-2351 is a high-severity flaw (CVSS 8.3) in Advanced Networking Option from Oracle, published on 21 July 2021. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 2.4%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2021-2351

## At a glance

- **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle.
- **Precursor Intelligence risk score:** 49 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes.
- **Severity:** High (CVSS 8.3 out of 10)
- **Known to be exploited:** No, not on the list of flaws known to be exploited today
- **Chance of use in the next 30 days:** 2.4% (latest exploit-likelihood forecast)
- **Published:** 21 July 2021
- **Record last updated:** 16 February 2024
- **Main product:** Advanced Networking Option from Oracle
- **Affected products:** 111

## What is CVE-2021-2351? In plain terms

It can be attacked from anywhere on the internet without logging in, but a person has to take an action first. If it works, the attacker can read data, change data and take it offline.

### The official description

Vulnerability in the Advanced Networking Option component of Oracle Database Server. Supported versions that are affected are 12.1.0.2, 12.2.0.1 and 19c. Difficult to exploit vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise Advanced Networking Option. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Advanced Networking Option, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Advanced Networking Option. Note: The July 2021 Critical Patch Update introduces a number of Native Network Encryption changes to deal with vulnerability CVE-2021-2351 and prevent the use of weaker ciphers. Customers should review: "Changes in Native Network Encryption with the July 2021 Critical Patch Update" (Doc ID 2791571.1).

### What kind of flaw is it?

- CWE-327: Use of a Broken or Risky Cryptographic Algorithm
- CWE-384: Session Fixation

### How an attack on it works

- Where an attacker can be: Anywhere on the internet
- How hard it is to pull off: Hard: conditions must line up
- Login needed first: No login needed
- Does someone have to click: Yes, a person has to take an action
- What an attacker gets: Can read data, change data and take it offline

Severity vector: `CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H`

## Is CVE-2021-2351 being exploited? Not that we know of

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 2.4%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 2.4%, 2.4%, 2.4%, 2.4%, 2.4%, 2.4%, 2.4%.

### Timeline

- 21 July 2021: Published
- 16 February 2024: Record last updated

### How Precursor Intelligence ranks it

CVE-2021-2351 scores **49 out of 100 (Medium)**, with the action "Plan remediation".

Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less:

- Evidence it is being exploited: biggest factor
- How severe it is: strong factor
- How widely exposed it is: smaller factor
- Threat activity around it: smaller factor

85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it.

## Who is affected by CVE-2021-2351?

The published record lists 111 products. Versions are as published: "before 12.3.0.1.0" means every version up to, but not including, 12.3.0.1.0.

- [Advanced Networking Option](https://www.precursorintelligence.com/product/oracle/advanced_networking_option) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.1.0.2, 12.2.0.1, 19c
- [Banking Digital Experience](https://www.precursorintelligence.com/product/oracle/banking_digital_experience) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 17.2, 18.1 to 18.3, 19.1, 19.2, 20.1, 21.1
- [Flexcube Investor Servicing](https://www.precursorintelligence.com/product/oracle/flexcube_investor_servicing) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.0.4, 12.1.0, 12.3.0, 12.4.0, 14.4.0, 14.5.0
- [Banking Apis](https://www.precursorintelligence.com/product/oracle/banking_apis) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 18.1 to 18.3, 19.1, 19.2, 20.1, 21.1
- [Communications Data Model](https://www.precursorintelligence.com/product/oracle/communications_data_model) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 11.3.2.1.0, 11.3.2.2.0, 11.3.2.3.0, 12.1.0.1.0, 12.1.2.0.0
- [Hospitality Suite8](https://www.precursorintelligence.com/product/oracle/hospitality_suite8) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.10.2, 8.11.0, 8.12.0, 8.13.0, 8.14.0
- [Insurance Data Gateway](https://www.precursorintelligence.com/product/oracle/insurance_data_gateway) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 11.0.2, 11.1.0, 11.2.7, 11.3.0, 11.3.1
- [Insurance Policy Administration](https://www.precursorintelligence.com/product/oracle/insurance_policy_administration) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 11.0.2, 11.1.0, 11.2.7, 11.3.0, 11.3.1
- [Insurance Rules Palette](https://www.precursorintelligence.com/product/oracle/insurance_rules_palette) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 11.0.2, 11.1.0, 11.2.7, 11.3.0, 11.3.1
- [Primavera Unifier](https://www.precursorintelligence.com/product/oracle/primavera_unifier) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 17.7 to 17.12, 18.8, 19.12, 20.12, 21.12
- [Utilities Framework](https://www.precursorintelligence.com/product/oracle/utilities_framework) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 4.2.0.3.0, 4.3.0.1.0 to 4.3.0.6.0, 4.4.0.0.0, 4.4.0.2.0, 4.4.0.3.0
- [Communications Design Studio](https://www.precursorintelligence.com/product/oracle/communications_design_studio) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 7.3.5, 7.4.0, 7.4.1, 7.4.2
- [Primavera Gateway](https://www.precursorintelligence.com/product/oracle/primavera_gateway) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 17.12.0 to 17.12.11, 18.8.0 to 18.8.12, 19.12.0 to 19.12.11, 20.12.0 to 20.12.7
- [Primavera P6 Enterprise Project Portfolio Management](https://www.precursorintelligence.com/product/oracle/primavera_p6_enterprise_project_portfolio_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 17.12.0.0 to 17.12.20, 18.8.0.0 to 18.8.24, 19.12.0.0 to 19.12.17.0, 20.12.0.0 to 20.12.9.0
- [Primavera P6 Professional Project Management](https://www.precursorintelligence.com/product/oracle/primavera_p6_professional_project_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 17.12 to 17.12.20.0, 18.8 to 18.8.24.0, 19.12.0.0 to 19.12.17.0, 20.12.0.0 to 20.12.9.0
- [Retail Financial Integration](https://www.precursorintelligence.com/product/oracle/retail_financial_integration) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 14.1.3.2, 15.0.3.1, 16.0.3.0, 19.0.1
- [Retail Integration Bus](https://www.precursorintelligence.com/product/oracle/retail_integration_bus) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 14.1.3.2, 15.0.3.1, 16.0.3, 19.0.1
- [Retail Service Backbone](https://www.precursorintelligence.com/product/oracle/retail_service_backbone) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 14.1.3.2, 15.0.3.1, 16.0.3, 19.0.1
- [Retail Xstore Point of Service](https://www.precursorintelligence.com/product/oracle/retail_xstore_point_of_service) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 17.0.4, 18.0.3, 19.0.2, 20.0.1
- [Argus Analytics](https://www.precursorintelligence.com/product/oracle/argus_analytics) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.2.1, 8.2.2, 8.2.3
- [Argus Insight](https://www.precursorintelligence.com/product/oracle/argus_insight) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.2.1, 8.2.2, 8.2.3
- [Argus Mart](https://www.precursorintelligence.com/product/oracle/argus_mart) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.2.1, 8.2.2, 8.2.3
- [Argus Safety](https://www.precursorintelligence.com/product/oracle/argus_safety) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.2.1, 8.2.2, 8.2.3
- [Banking Platform](https://www.precursorintelligence.com/product/oracle/banking_platform) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 2.6.2, 2.7.1, 2.12.0
- [Commerce Platform](https://www.precursorintelligence.com/product/oracle/commerce_platform) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 11.3.0, 11.3.1, 11.3.2
- [Documaker](https://www.precursorintelligence.com/product/oracle/documaker) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.6.0, 12.6.2 to 12.6.4, 12.7.0
- [Financial Services Behavior Detection Platform](https://www.precursorintelligence.com/product/oracle/financial_services_behavior_detection_platform) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.0.7, 8.0.8, 8.0.11
- [Financial Services Enterprise Case Management](https://www.precursorintelligence.com/product/oracle/financial_services_enterprise_case_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.0.7, 8.0.8, 8.0.11
- [Financial Services Foreign Account Tax Compliance Act Management](https://www.precursorintelligence.com/product/oracle/financial_services_foreign_account_tax_compliance_act_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.0.7, 8.0.8, 8.0.11
- [Healthcare Data Repository](https://www.precursorintelligence.com/product/oracle/healthcare_data_repository) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 7.0.2, 8.1.0, 8.1.1
- [Healthcare Foundation](https://www.precursorintelligence.com/product/oracle/healthcare_foundation) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 7.3.0 to 7.3.0.2, 8.0.0 to 8.0.2, 8.1.0 to 8.1.1
- [Instantis Enterprisetrack](https://www.precursorintelligence.com/product/oracle/instantis_enterprisetrack) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 17.1, 17.2, 17.3
- [Peoplesoft Enterprise Peopletools](https://www.precursorintelligence.com/product/oracle/peoplesoft_enterprise_peopletools) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.57, 8.58, 8.59
- [Primavera Analytics](https://www.precursorintelligence.com/product/oracle/primavera_analytics) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 18.8.3.3, 19.12.11.1, 20.12.12.0
- [Primavera Data Warehouse](https://www.precursorintelligence.com/product/oracle/primavera_data_warehouse) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 18.8.3.3, 19.12.11.1, 20.12.12.0
- [Retail Order Broker](https://www.precursorintelligence.com/product/oracle/retail_order_broker) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 16.0, 18.0, 19.1
- [Retail Predictive Application Server](https://www.precursorintelligence.com/product/oracle/retail_predictive_application_server) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 14.1.3, 15.0.3, 16.0.3
- [Retail Price Management](https://www.precursorintelligence.com/product/oracle/retail_price_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 14.1, 15.0, 16.0
- [Retail Store Inventory Management](https://www.precursorintelligence.com/product/oracle/retail_store_inventory_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 14.1, 15.0, 16.0
- [Thesaurus Management System](https://www.precursorintelligence.com/product/oracle/thesaurus_management_system) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 5.2.3, 5.3.0, 5.3.1
- [Utilities Testing Accelerator](https://www.precursorintelligence.com/product/oracle/utilities_testing_accelerator) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 6.0.0.1.1, 6.0.0.2.2, 6.0.0.3.1
- [Weblogic Server](https://www.precursorintelligence.com/product/oracle/weblogic_server) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.2.1.3.0, 12.2.1.4.0, 14.1.1.0.0
- [Agile Product Lifecycle Management for Process](https://www.precursorintelligence.com/product/oracle/agile_product_lifecycle_management_for_process) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 6.2.2.0, 6.2.3.0
- [Airlines Data Model](https://www.precursorintelligence.com/product/oracle/airlines_data_model) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.1.1.0.0, 12.2.0.1.0
- [Application Performance Management](https://www.precursorintelligence.com/product/oracle/application_performance_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 13.4.1.0, 13.5.1.0
- [Banking Enterprise Default Management](https://www.precursorintelligence.com/product/oracle/banking_enterprise_default_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 2.10.0, 2.12.0
- [Clinical](https://www.precursorintelligence.com/product/oracle/clinical) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 5.2.1, 5.2.2
- [Communications Billing and Revenue Management](https://www.precursorintelligence.com/product/oracle/communications_billing_and_revenue_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.0.0.4, 12.0.0.5
- [Communications Convergent Charging Controller](https://www.precursorintelligence.com/product/oracle/communications_convergent_charging_controller) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 6.0.1.0.0, 12.0.1.0.0 to 12.0.4.0.0
- [Communications Network Charging and Control](https://www.precursorintelligence.com/product/oracle/communications_network_charging_and_control) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 6.0.1.0.0, 12.0.1.0 to 12.0.4.0.0
- [Communications Network Integrity](https://www.precursorintelligence.com/product/oracle/communications_network_integrity) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 7.3.5, 7.3.6
- [Communications Pricing Design Center](https://www.precursorintelligence.com/product/oracle/communications_pricing_design_center) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.0.0.4, 12.0.0.5
- [Data Integrator](https://www.precursorintelligence.com/product/oracle/data_integrator) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.2.1.3.0, 12.2.1.4.0
- [Enterprise Data Quality](https://www.precursorintelligence.com/product/oracle/enterprise_data_quality) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.2.1.3.0, 12.2.1.4.0
- [Enterprise Manager Base Platform](https://www.precursorintelligence.com/product/oracle/enterprise_manager_base_platform) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 13.4.0.0, 13.5.0.0
- [Financial Services Trade-Based Anti Money Laundering](https://www.precursorintelligence.com/product/oracle/financial_services_trade-based_anti_money_laundering) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.0.7, 8.0.8
- [Flexcube Private Banking](https://www.precursorintelligence.com/product/oracle/flexcube_private_banking) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.0.0, 12.1.0
- [Fusion Middleware](https://www.precursorintelligence.com/product/oracle/fusion_middleware) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.2.1.3.0, 12.2.1.4.0
- [Goldengate](https://www.precursorintelligence.com/product/oracle/goldengate) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): before 12.3.0.1.0, 19.1.0.0.1 to before 21.5.0.0.220118
- [Health Sciences Information Manager](https://www.precursorintelligence.com/product/oracle/health_sciences_information_manager) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 3.0.2, 3.0.3
- [Hospitality Inventory Management](https://www.precursorintelligence.com/product/oracle/hospitality_inventory_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): before 9.1.0, 9.1.0
- [Ilearning](https://www.precursorintelligence.com/product/oracle/ilearning) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 6.2, 6.3
- [Insurance Insbridge Rating and Underwriting](https://www.precursorintelligence.com/product/oracle/insurance_insbridge_rating_and_underwriting) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 5.2.0, 5.4 to 5.6.0
- [Real User Experience Insight](https://www.precursorintelligence.com/product/oracle/real_user_experience_insight) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 13.4.1.0, 13.5.1.0
- [Timesten in-Memory Database](https://www.precursorintelligence.com/product/oracle/timesten_in-memory_database) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): before 21.1.1.1.0, 21.1.1.1.0
- [Agile Engineering Data Management](https://www.precursorintelligence.com/product/oracle/agile_engineering_data_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 6.2.1.0
- [Agile Plm](https://www.precursorintelligence.com/product/oracle/agile_plm) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 9.3.6
- [Application Testing Suite](https://www.precursorintelligence.com/product/oracle/application_testing_suite) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 13.3.0.1
- [Big Data Spatial and Graph](https://www.precursorintelligence.com/product/oracle/big_data_spatial_and_graph) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): before 23.1
- [Blockchain Platform](https://www.precursorintelligence.com/product/oracle/blockchain_platform) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 21.1.2
- [Communications Application Session Controller](https://www.precursorintelligence.com/product/oracle/communications_application_session_controller) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 3.9.0
- [Communications Calendar Server](https://www.precursorintelligence.com/product/oracle/communications_calendar_server) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.0.0.5.0
- [Communications Contacts Server](https://www.precursorintelligence.com/product/oracle/communications_contacts_server) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.0.0.3.0
- [Communications Diameter Intelligence Hub](https://www.precursorintelligence.com/product/oracle/communications_diameter_intelligence_hub) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.0.0 to 8.2.3
- [Communications IP Service Activator](https://www.precursorintelligence.com/product/oracle/communications_ip_service_activator) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 7.4.0
- [Communications Metasolv Solution](https://www.precursorintelligence.com/product/oracle/communications_metasolv_solution) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 6.3.1
- [Communications Services Gatekeeper](https://www.precursorintelligence.com/product/oracle/communications_services_gatekeeper) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 7.0
- [Communications Session Report Manager](https://www.precursorintelligence.com/product/oracle/communications_session_report_manager) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.0.0 to 8.2.5.0
- [Communications Session Route Manager](https://www.precursorintelligence.com/product/oracle/communications_session_route_manager) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.2.0 to 8.2.5
- [Demantra Demand Management](https://www.precursorintelligence.com/product/oracle/demantra_demand_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.2.6 to 12.2.11
- [Enterprise Manager Ops Center](https://www.precursorintelligence.com/product/oracle/enterprise_manager_ops_center) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.4.0.0
- [Financial Services Analytical Applications Infrastructure](https://www.precursorintelligence.com/product/oracle/financial_services_analytical_applications_infrastructure) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.0.7 to 8.1.1
- [Financial Services Model Management and Governance](https://www.precursorintelligence.com/product/oracle/financial_services_model_management_and_governance) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.0.8.0.0 to 8.1.1.0.0
- [Goldengate Application Adapters](https://www.precursorintelligence.com/product/oracle/goldengate_application_adapters) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): before 23.1
- [Graph Server and Client](https://www.precursorintelligence.com/product/oracle/graph_server_and_client) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): before 21.4.0
- [Health Sciences Clinical Development Analytics](https://www.precursorintelligence.com/product/oracle/health_sciences_clinical_development_analytics) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 4.0.1
- [Health Sciences Inform Crf Submit](https://www.precursorintelligence.com/product/oracle/health_sciences_inform_crf_submit) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 6.2.1
- [Healthcare Translational Research](https://www.precursorintelligence.com/product/oracle/healthcare_translational_research) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 4.1.0
- [Hospitality Opera 5](https://www.precursorintelligence.com/product/oracle/hospitality_opera_5) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 5.6
- [Hospitality Reporting and Analytics](https://www.precursorintelligence.com/product/oracle/hospitality_reporting_and_analytics) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 9.1.0
- [Hyperion Infrastructure Technology](https://www.precursorintelligence.com/product/oracle/hyperion_infrastructure_technology) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 11.2.7.0
- [Jd Edwards Enterpriseone Tools](https://www.precursorintelligence.com/product/oracle/jd_edwards_enterpriseone_tools) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 9.2.6.3
- [Oss Support Tools](https://www.precursorintelligence.com/product/oracle/oss_support_tools) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): before 2.12.42
- [Policy Automation](https://www.precursorintelligence.com/product/oracle/policy_automation) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.2.0 to 12.2.24
- [Product Lifecycle Analytics](https://www.precursorintelligence.com/product/oracle/product_lifecycle_analytics) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 3.6.1
- [Rapid Planning](https://www.precursorintelligence.com/product/oracle/rapid_planning) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 12.2.6 to 12.2.11
- [Retail Analytics](https://www.precursorintelligence.com/product/oracle/retail_analytics) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 16.0.0 to 16.0.2
- [Retail Assortment Planning](https://www.precursorintelligence.com/product/oracle/retail_assortment_planning) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 16.0.3
- [Retail Back Office](https://www.precursorintelligence.com/product/oracle/retail_back_office) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 14.1
- [Retail Central Office](https://www.precursorintelligence.com/product/oracle/retail_central_office) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 14.1
- [Retail Customer Insights](https://www.precursorintelligence.com/product/oracle/retail_customer_insights) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 16.0 to 16.0.2
- [Retail Extract Transform and Load](https://www.precursorintelligence.com/product/oracle/retail_extract_transform_and_load) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 13.2.8
- [Retail Merchandising System](https://www.precursorintelligence.com/product/oracle/retail_merchandising_system) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 19.0.1
- [Retail Order Management System](https://www.precursorintelligence.com/product/oracle/retail_order_management_system) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 19.5
- [Retail Point-of-Service](https://www.precursorintelligence.com/product/oracle/retail_point-of-service) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 14.1
- [Retail Returns Management](https://www.precursorintelligence.com/product/oracle/retail_returns_management) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 14.1
- [Siebel UI Framework](https://www.precursorintelligence.com/product/oracle/siebel_ui_framework) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): up to 21.12
- [Spatial Studio](https://www.precursorintelligence.com/product/oracle/spatial_studio) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): before 21.2.1
- [Storagetek Acsls](https://www.precursorintelligence.com/product/oracle/storagetek_acsls) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 8.5.1
- [Storagetek Tape Analytics](https://www.precursorintelligence.com/product/oracle/storagetek_tape_analytics) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 2.4
- [Zfs Storage Application Integration Engineering Software](https://www.precursorintelligence.com/product/oracle/zfs_storage_application_integration_engineering_software) by [Oracle](https://www.precursorintelligence.com/vendors/oracle) (Application): 1.3.3

## How do I fix CVE-2021-2351?

1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list.
2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisories and patch notes first in the list.
3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in.
4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood.

### References

- [oracle.com](https://www.oracle.com/security-alerts/cpuapr2022.html) (Patch, Vendor advisory)
- [oracle.com](https://www.oracle.com/security-alerts/cpujan2022.html) (Patch, Vendor advisory)
- [oracle.com](https://www.oracle.com/security-alerts/cpujul2021.html) (Patch, Vendor advisory)
- [oracle.com](https://www.oracle.com/security-alerts/cpuoct2021.html) (Patch, Vendor advisory)
- [oracle.com](https://www.oracle.com/security-alerts/cpujan2023.html) (Vendor advisory)
- [oracle.com](https://www.oracle.com/security-alerts/cpujul2022.html) (Vendor advisory)
- [packetstormsecurity.com](http://packetstormsecurity.com/files/165255/Oracle-Database-Protection-Mechanism-Bypass.html) (Exploit, Third-party advisory, Vulnerability database)
- [packetstormsecurity.com](http://packetstormsecurity.com/files/165258/Oracle-Database-Weak-NNE-Integrity-Key-Derivation.html) (Exploit, Third-party advisory, Vulnerability database)
- [seclists.org](http://seclists.org/fulldisclosure/2021/Dec/19) (Exploit, Mailing list, Third-party advisory)
- [seclists.org](http://seclists.org/fulldisclosure/2021/Dec/20) (Exploit, Mailing list, Third-party advisory)

## Questions

### What is CVE-2021-2351?

CVE-2021-2351 is a high-severity flaw in Advanced Networking Option from Oracle, published on 21 July 2021. It can be attacked from anywhere on the internet without logging in, but a person has to take an action first. If it works, the attacker can read data, change data and take it offline.

### How serious is CVE-2021-2351?

It scores 8.3 out of 10 on the CVSS severity scale, which is high. Our risk score for CVE-2021-2351 is 49 out of 100, which is Medium. Its action is "Plan remediation". No sign of exploitation and a low forecast. Patch it in your normal update cycle.

### Is CVE-2021-2351 being exploited?

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 2.4%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2021-2351 affect?

For Advanced Networking Option from Oracle: 12.1.0.2, 12.2.0.1, 19c. The record lists 111 products in all, each with its versions, under "Who is affected" on this page.

### How do I fix CVE-2021-2351?

Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet.

## Does CVE-2021-2351 affect you?

Precursor Intelligence keeps checking for you:

- **Tell us what you run.** Pick your software from a list, or let us work it out from your website.
- **We match it to every flaw.** Over 400,000 published flaws, checked against your list.
- **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it.
- **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools.

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