The RPC protocol implementation in Apache Hadoop 2.x before 2.0.6-alpha, 0.23.x before 0.23.9, and 1.x before 1.2.1, when the Kerberos security features are enabled, allows man-in-the-middle attackers to disable bidirectional authentication and obtain sensitive information by forcing a downgrade to simple authentication.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Hadoop | Apache | 0.23.0 (including) | 0.23.0 (including) |
| Hadoop | Apache | 0.23.1 (including) | 0.23.1 (including) |
| Hadoop | Apache | 0.23.3 (including) | 0.23.3 (including) |
| Hadoop | Apache | 0.23.4 (including) | 0.23.4 (including) |
| Hadoop | Apache | 0.23.5 (including) | 0.23.5 (including) |
| Hadoop | Apache | 0.23.6 (including) | 0.23.6 (including) |
| Hadoop | Apache | 0.23.7 (including) | 0.23.7 (including) |
| Hadoop | Apache | 0.23.8 (including) | 0.23.8 (including) |
| Hadoop | Apache | 1.0.0 (including) | 1.0.0 (including) |
| Hadoop | Apache | 1.0.1 (including) | 1.0.1 (including) |
| Hadoop | Apache | 1.0.2 (including) | 1.0.2 (including) |
| Hadoop | Apache | 1.0.3 (including) | 1.0.3 (including) |
| Hadoop | Apache | 1.0.4 (including) | 1.0.4 (including) |
| Hadoop | Apache | 1.1.0 (including) | 1.1.0 (including) |
| Hadoop | Apache | 1.1.1 (including) | 1.1.1 (including) |
| Hadoop | Apache | 1.1.2 (including) | 1.1.2 (including) |
| Hadoop | Apache | 1.2.0 (including) | 1.2.0 (including) |
| Hadoop | Apache | 2.0.0-alpha (including) | 2.0.0-alpha (including) |
| Hadoop | Apache | 2.0.1-alpha (including) | 2.0.1-alpha (including) |
| Hadoop | Apache | 2.0.2-alpha (including) | 2.0.2-alpha (including) |
| Hadoop | Apache | 2.0.3-alpha (including) | 2.0.3-alpha (including) |
| Hadoop | Apache | 2.0.4-alpha (including) | 2.0.4-alpha (including) |
| Hadoop | Apache | 2.0.5-alpha (including) | 2.0.5-alpha (including) |