CVE-2020-11080
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- CVE-2020-11080
CVE Details
| Release Date: | 2020-06-03 |
Description
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.
See more information about CVE-2020-11080 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-2020-5765 | 2020-07-22 |
| Oracle Linux version 7 (kata) | ELSA-2020-5765 | 2020-07-22 |
| Oracle Linux version 7 (kata-image) | ELSA-2020-5765 | 2020-07-22 |
| Oracle Linux version 7 (kata-runtime) | ELSA-2020-5765 | 2020-07-22 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2020-5765 | 2020-07-22 |
| Oracle Linux version 7 (kubernetes) | ELSA-2020-5765 | 2020-07-22 |
| Oracle Linux version 7 (olcne) | ELSA-2020-5765 | 2020-07-22 |
| Oracle Linux version 8 (nghttp2) | ELSA-2020-2755 | 2020-07-06 |
| Oracle Linux version 8 (nodejs) | ELSA-2020-2848 | 2020-07-14 |
| Oracle Linux version 8 (nodejs) | ELSA-2020-2852 | 2020-07-14 |
| Oracle Linux version 8 (nodejs-nodemon) | ELSA-2020-2848 | 2020-07-14 |
| Oracle Linux version 8 (nodejs-nodemon) | ELSA-2020-2852 | 2020-07-14 |
| Oracle Linux version 8 (nodejs-packaging) | ELSA-2020-2848 | 2020-07-14 |
| Oracle Linux version 8 (nodejs-packaging) | ELSA-2020-2852 | 2020-07-14 |
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