Loop with Unreachable Exit Condition ('Infinite Loop') Affecting python38-cffi package, versions <0:1.13.2-3.module+el8.4.0+8888+89bc7e79


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.44% (75th percentile)

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  • Snyk IDSNYK-CENTOS8-PYTHON38CFFI-2131651
  • 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 Centos:8 python38-cffi to version 0:1.13.2-3.module+el8.4.0+8888+89bc7e79 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python38-cffi package and not the python38-cffi package as distributed by Centos. See How to fix? for Centos: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