Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2020-11080

3.7 · LOW

In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service.

Published Jun 3, 2020CWE-707EPSS 5.32%

Overview

CVE-2020-11080 is a low-severity vulnerability. It was published on June 3, 2020 and has a CVSS 3.1 base score of 3.7 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-security-announce/2020-06/msg00024.htmlGitHubgithub.com/nghttp2/nghttp2/commit/336a98feb0d56b9ac54e12736b18785c27f75090GitHubgithub.com/nghttp2/nghttp2/commit/f8da73bd042f810f34d19f9eae02b46d870af394GitHubgithub.com/nghttp2/nghttp2/security/advisories/GHSA-q5wr-xfw9-q7xrReflists.debian.org/debian-lts-announce/2021/10/msg00011.htmlReflists.debian.org/debian-lts-announce/2023/10/msg00023.htmlReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AAC2AA36OTRHKSVM5OV7TTVB3CZIGEFL/Refwww.debian.org/security/2020/dsa-4696Refwww.oracle.com//security-alerts/cpujul2021.html

How CyberStrike helps

Frequently asked questions

What is CVE-2020-11080?

CVE-2020-11080 is a low-severity vulnerability. It was published on June 3, 2020 and has a CVSS 3.1 base score of 3.7 (LOW).

How severe is CVE-2020-11080?

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-11080?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-11080?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-11080 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related LOW CVEs from 2020

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999