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CVE-2021-31810 The advisory has been revoked - it doesn't affect any version of package ruby:2.6/ruby-irb  (opens in a new tab)

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EPSS
3.05% (86th percentile)

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  • Snyk IDSNYK-ALMALINUX8-RUBY-5610123
  • published28 May 2023
  • disclosed24 Feb 2022
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Introduced: 24 Feb 2022

CVE-2021-31810  (opens in a new tab)

Amendment

The AlmaLinux security team deemed this advisory irrelevant for AlmaLinux:8.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby:2.6/ruby-irb package and not the ruby:2.6/ruby-irb package as distributed by AlmaLinux.

An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port. This potentially makes curl extract information about services that are otherwise private and not disclosed (e.g., the attacker can conduct port scans and service banner extractions).

References