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Resource Exhaustion Affecting python39-pyyaml package, versions <0:5.4.1-1.module+el8.5.0+20364+c7fe1181

Severity

 Recommended
0.0
medium
0
10

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.34% (72nd percentile)

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  • Snyk ID SNYK-ORACLE8-PYTHON39PYYAML-2590091
  • published 10 Apr 2022
  • disclosed 10 Mar 2022
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Introduced: 10 Mar 2022

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

How to fix?

Upgrade Oracle:8 python39-pyyaml to version 0:5.4.1-1.module+el8.5.0+20364+c7fe1181 or higher.
This issue was patched in ELSA-2021-4160.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python39-pyyaml package and not the python39-pyyaml package as distributed by Oracle. See How to fix? for Oracle: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.

CVSS Scores

version 3.1
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NVD

6.5 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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SUSE

4 medium
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Red Hat

6.5 medium