CVE-2023-43622

Public on 2023-10-23
Modified on 2024-02-07
Description
A flaw was found in httpd. This flaw allows an attacker opening an HTTP/2 connection with an initial window size of 0 to block handling of that connection indefinitely in the Apache HTTP Server. This vulnerability can exhaust worker resources in the server, similar to the well-known "slow loris" attack pattern.
Severity
Medium severity
Medium
CVSS v3 Base Score
5.3
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 2 - Core httpd 2023-10-30 ALAS2-2023-2322 Fixed
Amazon Linux 2023 httpd 2023-11-09 ALAS2023-2023-433 Fixed
Amazon Linux 1 httpd24 2023-10-30 ALAS-2023-1877 Fixed

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD CVSSv3 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H