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.
This vulnerability carries a LOW severity rating with a CVSS v3.1 score of 3.7, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and limited availability for affected systems. Impacting 10 products from nghttp2, from debian, from opensuse and 7 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2020-06-03T23:15:11.073
2024-11-21T04:56:44.657
Modified
CVSSv3.1: 3.7 (LOW)
AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | nghttp2 | nghttp2 | < 1.41.0 | Yes |
| Operating System | debian | debian_linux | 9.0 | Yes |
| Operating System | debian | debian_linux | 10.0 | Yes |
| Operating System | opensuse | leap | 15.1 | Yes |
| Operating System | fedoraproject | fedora | 31 | Yes |
| Operating System | fedoraproject | fedora | 33 | Yes |
| Application | oracle | banking_extensibility_workbench | 14.3.0 | Yes |
| Application | oracle | banking_extensibility_workbench | 14.4.0 | Yes |
| Application | oracle | blockchain_platform | < 21.1.2 | Yes |
| Application | oracle | enterprise_communications_broker | 3.1.0 | Yes |
| Application | oracle | enterprise_communications_broker | 3.2.0 | Yes |
| Application | oracle | graalvm | 19.3.2 | Yes |
| Application | oracle | graalvm | 20.1.0 | Yes |
| Application | oracle | mysql | ≤ 7.3.30 | Yes |
| Application | oracle | mysql | ≤ 7.4.29 | Yes |
| Application | oracle | mysql | ≤ 7.5.19 | Yes |
| Application | oracle | mysql | ≤ 7.6.15 | Yes |
| Application | oracle | mysql | ≤ 8.0.21 | Yes |
| Application | nodejs | node.js | ≤ 10.12.0 | Yes |
| Application | nodejs | node.js | < 10.21.0 | Yes |
| Application | nodejs | node.js | ≤ 12.12.0 | Yes |
| Application | nodejs | node.js | < 12.18.0 | Yes |
| Application | nodejs | node.js | ≤ 14.4.0 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For nghttp2's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.