CVE-2021-33621

Published: 18 November 2022

The cgi gem before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5 for Ruby allows HTTP response splitting. This is relevant to applications that use untrusted user input either to generate an HTTP response or to create a CGI::Cookie object.

Priority

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package	Release	Status
ruby1.9.1 Launchpad, Ubuntu, Debian	kinetic	Does not exist
	trusty	Ignored (end of standard support)
	upstream	Needs triage
	xenial	Does not exist
	bionic	Does not exist
	focal	Does not exist
	jammy	Does not exist
ruby2.0 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	trusty	Ignored (end of standard support)
	upstream	Needs triage
	xenial	Does not exist
ruby2.3 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	trusty	Does not exist
	upstream	Released
	xenial	Released (2.3.1-2~ubuntu16.04.16+esm4) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	Patches: upstream: https://github.com/ruby/cgi/commit/64c5045c0a6b84fdb938a8465a0890e5f7162708 (0.3.5) upstream: https://github.com/ruby/cgi/commit/30107a4797f14227568913499a9a0bb4285de63b (0.3.5) upstream: https://github.com/ruby/cgi/commit/b46d41c36380e04f6388970b5ef05c687f4d1819 (0.3.5) upstream: https://github.com/ruby/cgi/commit/35317005f853112295de8b8bd99643e66dff4e33 (0.2.2) upstream: https://github.com/ruby/cgi/commit/3b5db783557a18150a06776b4af07ef658afb7f5 (0.2.2) upstream: https://github.com/ruby/cgi/commit/245b3f7e7446aa0bbd0ab09bf8a8bbc9e098f3ff (0.2.2) upstream: https://github.com/ruby/cgi/commit/85e22c30b4e410d1dc57f21160cc24b236b8cdc6 (1.0.2) upstream: https://github.com/ruby/cgi/commit/5f569ecdb45dc5418f0fd3d1378ba1bde5107ea5 (1.0.2) upstream: https://github.com/ruby/cgi/commit/107a0c67f922044dc78e2fde94f991206267a6a0 (1.0.2)
ruby2.5 Launchpad, Ubuntu, Debian	bionic	Released (2.5.1-1ubuntu1.13)
	focal	Does not exist
	jammy	Does not exist
	kinetic	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 (2.7.0-5ubuntu1.8)
	jammy	Does not exist
	kinetic	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
ruby3.0 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	jammy	Released (3.0.2-7ubuntu2.3)
	kinetic	Released (3.0.4-7ubuntu0.1)
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
	lunar	Does not exist
	mantic	Does not exist
ruby3.1 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	jammy	Does not exist
	kinetic	Released (3.1.2-2ubuntu0.22.10.1)
	trusty	Does not exist
	upstream	Released (3.1.2-4)
	xenial	Does not exist
	lunar	Not vulnerable (3.1.2-6)
	mantic	Not vulnerable (3.1.2-6)
jruby Launchpad, Ubuntu, Debian	bionic	Needs triage
	focal	Needs triage
	jammy	Does not exist
	kinetic	Does not exist
	trusty	Needs triage
	upstream	Needs triage
	xenial	Needs triage
	lunar	Needs triage
	mantic	Needs triage

Severity score breakdown

Parameter	Value
Base score	8.8
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

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