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Resource Exhaustion Affecting python3.9 package, versions *

low

Snyk CVSS

    Attack Complexity Low
    Availability High
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NVD
6.5 medium
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SUSE
4 medium
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Red Hat
6.5 medium

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  • Snyk ID SNYK-DEBIAN11-PYTHON39-1579738
  • published 2 Sep 2021
  • disclosed 10 Mar 2022
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Introduced: 2 Sep 2021

CVE-2021-3733 Open this link in a new tab
CWE-400 Open this link in a new tab

How to fix?

There is no fixed version for Debian:11 python3.9.

NVD Description

Note: Versions mentioned in the description apply to the upstream python3.9 package.

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.