VULNERABILITY

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

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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

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