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Resource Exhaustion Affecting platform-python package, versions <0:3.6.8-39.el8_4

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    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-CENTOS8-PLATFORMPYTHON-1971006
  • published 1 Sep 2021
  • disclosed 10 Aug 2021
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Introduced: 10 Aug 2021

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

How to fix?

Upgrade Centos:8 platform-python to version 0:3.6.8-39.el8_4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream platform-python package and not the platform-python package as distributed by Centos:8. See How to fix? for Centos:8 relevant fixed versions and status.

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.