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Resource Exhaustion Affecting python-libs package, versions *

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Availability High

    Threat Intelligence

    EPSS 0.27% (66th percentile)
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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-CENTOS7-PYTHONLIBS-2027058
  • 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?

There is no fixed version for Centos:7 python-libs.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-libs package and not the python-libs package as distributed by Centos. See How to fix? for Centos:7 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.