Rapid7 Vulnerability & Exploit Database

Red Hat OpenShift: CVE-2021-28363: HTTPS proxy host name not validated when using default SSLContext

Free InsightVM Trial No Credit Card Necessary
2024 Attack Intel Report Latest research by Rapid7 Labs
Back to Search

Red Hat OpenShift: CVE-2021-28363: HTTPS proxy host name not validated when using default SSLContext

Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:N)
Published
03/15/2021
Created
05/26/2021
Added
05/25/2021
Modified
07/10/2023

Description

The urllib3 library 1.26.x before 1.26.4 for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxies. The initial connection to the HTTPS proxy (if an SSLContext isn't given via proxy_config) doesn't verify the hostname of the certificate. This means certificates for different servers that still validate properly with the default urllib3 SSLContext will be silently accepted.

Solution(s)

  • linuxrpm-upgrade-python-urllib3

References

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;