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Ubuntu: (Multiple Advisories) (CVE-2021-3733): Python vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2021-3733): Python vulnerabilities

Severity
4
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:P)
Published
09/16/2021
Created
09/21/2021
Added
09/17/2021
Modified
05/01/2023

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)

  • ubuntu-upgrade-libpython3-6-stdlib
  • ubuntu-upgrade-libpython3-7-stdlib
  • ubuntu-upgrade-libpython3-8-stdlib
  • ubuntu-upgrade-python3-4
  • ubuntu-upgrade-python3-4-minimal
  • ubuntu-upgrade-python3-5
  • ubuntu-upgrade-python3-5-minimal
  • ubuntu-upgrade-python3-6
  • ubuntu-upgrade-python3-6-minimal
  • ubuntu-upgrade-python3-7
  • ubuntu-upgrade-python3-7-minimal
  • ubuntu-upgrade-python3-8
  • ubuntu-upgrade-python3-8-minimal

References

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