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Debian: CVE-2021-31810: jruby, ruby2.5, ruby2.7 -- security update

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Debian: CVE-2021-31810: jruby, ruby2.5, ruby2.7 -- security update

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
07/13/2021
Created
11/30/2021
Added
11/29/2021
Modified
05/02/2023

Description

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).

Solution(s)

  • debian-upgrade-jruby
  • debian-upgrade-ruby2-5
  • debian-upgrade-ruby2-7

References

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