Executive Summary

Informations
Name CVE-2020-11080 First vendor Publication 2020-06-03
Vendor Cve Last vendor Modification 2023-11-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11080

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-707 Improper Enforcement of Message or Data Structure

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 211
Application 2
Application 1
Application 2
Application 2
Application 472
Os 2
Os 2
Os 1

Sources (Detail)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
Source Url
CONFIRM https://github.com/nghttp2/nghttp2/security/advisories/GHSA-q5wr-xfw9-q7xr
DEBIAN https://www.debian.org/security/2020/dsa-4696
MISC https://github.com/nghttp2/nghttp2/commit/336a98feb0d56b9ac54e12736b18785c27f...
https://github.com/nghttp2/nghttp2/commit/f8da73bd042f810f34d19f9eae02b46d870...
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com/security-alerts/cpujan2021.html
https://www.oracle.com/security-alerts/cpujul2020.html
https://www.oracle.com/security-alerts/cpuoct2020.html
MLIST https://lists.debian.org/debian-lts-announce/2021/10/msg00011.html
https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html
N/A https://www.oracle.com//security-alerts/cpujul2021.html
SUSE http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00024.html

Alert History

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2020-06-04 05:22:37
  • First insertion