Rapid7 Vulnerability & Exploit Database

Amazon Linux AMI 2: CVE-2021-3733: Security patch for python (ALAS-2022-1802)

Back to Search

Amazon Linux AMI 2: CVE-2021-3733: Security patch for python (ALAS-2022-1802)

Severity
4
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:P)
Published
03/10/2022
Created
07/16/2022
Added
07/04/2022
Modified
07/14/2022

Description

There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.

Solution(s)

  • amazon-linux-ami-2-upgrade-python
  • amazon-linux-ami-2-upgrade-python-debug
  • amazon-linux-ami-2-upgrade-python-debuginfo
  • amazon-linux-ami-2-upgrade-python-devel
  • amazon-linux-ami-2-upgrade-python-libs
  • amazon-linux-ami-2-upgrade-python-test
  • amazon-linux-ami-2-upgrade-python-tools
  • amazon-linux-ami-2-upgrade-tkinter

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

;