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Debian: CVE-2021-3733: python2.7, python3.7, python3.9 -- security update

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Debian: CVE-2021-3733: python2.7, python3.7, python3.9 -- security update

Severity
4
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:P)
Published
11/29/2021
Created
11/30/2021
Added
11/29/2021
Modified
05/29/2023

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)

  • debian-upgrade-python2-7
  • debian-upgrade-python3-7
  • debian-upgrade-python3-9

References

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