Loop with Unreachable Exit Condition ('Infinite Loop') Affecting python39:3.9/python39-pysocks package, versions <0:1.7.1-4.module+el8.4.0+9822+20bf1249


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.29% (70th percentile)

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  • Snyk IDSNYK-RHEL8-PYTHON39-4095375
  • published26 Jul 2021
  • disclosed1 Jun 2021

Introduced: 1 Jun 2021

CVE-2021-33503  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade RHEL:8 python39:3.9/python39-pysocks to version 0:1.7.1-4.module+el8.4.0+9822+20bf1249 or higher.
This issue was patched in RHSA-2021:4160.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python39:3.9/python39-pysocks package and not the python39:3.9/python39-pysocks package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.

CVSS Scores

version 3.1