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CVE-2021-31810

Published: 13 July 2021

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).

Notes

AuthorNote
leosilva
for xenial, the backport can be kind of intrusive. for now ignoring it.
Priority

Low

CVSS 3 base score: 5.8

Status

Package Release Status
ruby1.9.1
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

ruby2.0
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

ruby2.3
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial
Released (2.3.1-2~ubuntu16.04.16+esm1)
ruby2.5
Launchpad, Ubuntu, Debian
bionic
Released (2.5.1-1ubuntu1.10)
focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

ruby2.7
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (2.7.0-5ubuntu1.5)
groovy
Released (2.7.1-3ubuntu1.4)
hirsute
Released (2.7.2-4ubuntu1.2)
impish
Released (2.7.4-1ubuntu1)
trusty Does not exist

upstream Needs triage

xenial Does not exist