CVE-2023-27496
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- CVE-2023-27496
CVE Details
| Release Date: | 2023-04-04 |
Description
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, the OAuth filter assumes that a state query param is present on any response that looks like an OAuth redirect response. Sending it a request with the URI path equivalent to the redirect path, without the state parameter, will lead to abnormal termination of Envoy process. Versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9 contain a patch. The issue can also be mitigated by locking down OAuth traffic, disabling the filter, or by filtering traffic before it reaches the OAuth filter (e.g. via a lua script).
See more information about CVE-2023-27496 from MITRE CVE dictionary and NIST NVD
CVSS v3.0 metrics
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
| Base Score: | 7.5 | Base Metrics: | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Access Vector: | Network | Attack Complexity: | Low |
| Privileges Required: | None | User Interaction: | None |
| Scope: | Unchanged | Confidentiality Impact: | None |
| Integrity Impact: | None | Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 7 (istio) | ELSA-2023-12355 | 2023-06-02 |
| Oracle Linux version 7 (istio) | ELSA-2023-12357 | 2023-06-02 |
| Oracle Linux version 7 (kubernetes) | ELSA-2023-12355 | 2023-06-02 |
| Oracle Linux version 7 (kubernetes) | ELSA-2023-12357 | 2023-06-02 |
| Oracle Linux version 7 (olcne) | ELSA-2023-12355 | 2023-06-02 |
| Oracle Linux version 7 (olcne) | ELSA-2023-12357 | 2023-06-02 |
| Oracle Linux version 7 (olcne) | ELSA-2023-23649 | 2023-06-02 |
| Oracle Linux version 8 (istio) | ELSA-2023-12354 | 2023-06-02 |
| Oracle Linux version 8 (istio) | ELSA-2023-12356 | 2023-06-02 |
| Oracle Linux version 8 (kubernetes) | ELSA-2023-12354 | 2023-06-02 |
| Oracle Linux version 8 (kubernetes) | ELSA-2023-12356 | 2023-06-02 |
| Oracle Linux version 8 (olcne) | ELSA-2023-12354 | 2023-06-02 |
| Oracle Linux version 8 (olcne) | ELSA-2023-12356 | 2023-06-02 |
| Oracle Linux version 8 (olcne) | ELSA-2023-23648 | 2023-06-02 |
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