CVE-2020-11080

Advisory lineage Upstream: 0 Downstream: 34
Modified
Published: 03 Jun 2020, 00:00
Last modified:09 Jun 2025, 15:45

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.1 (nvd)
EPSS Score
1.25% LOW
1% probability +0.56%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Jun 2020, 00:00
Published
Vulnerability first disclosed
09 Jun 2025, 15:45
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•LOW•Score: 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 1.25%• Percentile: 80%

Techniques & Countermeasures

  • CWE-707•Improper Neutralization

    The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being read from an upstream component or sent to a downstream component.

  • CWE-400•Uncontrolled Resource Consumption

    The product does not properly control the allocation and maintenance of a limited resource.

Affected Systems

  • debian•debian_linux

    9.0 | 10.0

  • fedoraproject•fedora

    31 | 33

  • nghttp2•nghttp2

    < 1.41.0

  • nodejs•node.js

    ≥ 10.0.0, ≤ 10.12.0 | ≥ 10.13.0, < 10.21.0 | ≥ 12.0.0, ≤ 12.12.0 | ≥ 12.13.0, < 12.18.0 | ≥ 14.0.0, ≤ 14.4.0

  • opensuse•leap

    15.1

  • oracle•banking_extensibility_workbench

    14.3.0 | 14.4.0

  • oracle•blockchain_platform

    < 21.1.2

  • oracle•enterprise_communications_broker

    3.1.0 | 3.2.0

  • oracle•graalvm

    19.3.2 | 20.1.0

  • oracle•mysql

    ≥ 7.3.0, ≤ 7.3.30 | ≥ 7.4.0, ≤ 7.4.29 | ≥ 7.5.0, ≤ 7.5.19 | ≥ 7.6.0, ≤ 7.6.15 | ≥ 8.0.0, ≤ 8.0.21

References (14)