Inefficient Regular Expression Complexity Affecting ruby:2.5/rubygem-net-telnet package, versions <0:0.1.1-110.module_el8.6.0+3074+4b08f9d4


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.74% (82nd percentile)

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  • Snyk IDSNYK-ALMALINUX8-RUBY-5608696
  • published28 May 2023
  • disclosed13 Sept 2022

Introduced: 13 Sep 2022

CVE-2021-41817  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 ruby:2.5/rubygem-net-telnet to version 0:0.1.1-110.module_el8.6.0+3074+4b08f9d4 or higher.
This issue was patched in ALSA-2022:5779.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby:2.5/rubygem-net-telnet package and not the ruby:2.5/rubygem-net-telnet package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

Date.parse in the date gem through 3.2.0 for Ruby allows ReDoS (regular expression Denial of Service) via a long string. The fixed versions are 3.2.1, 3.1.2, 3.0.2, and 2.0.1.

CVSS Scores

version 3.1