HTTP response splitting in cgi - CVE-2021-33621

Vulnerability identifier: #VU69506

CSH Severity: Medium

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-33621

CWE-ID: CWE-113

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform HTTP splitting attacks.

The vulnerability exists due to software does not corrector process CRLF character sequences when handling cookies. A remote attacker can send specially crafted request containing CRLF sequence and make the application to send a split HTTP response.

Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.

cgi
Cloud Pak for Network Automation
cflinuxfs3
ObjectScale
OpenManage Network Integration (OMNI)
Dell EMC PowerStore Family Operating System
Oracle Linux
Gentoo Linux
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE CaaS Platform
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE Enterprise Storage
Red Hat Enterprise Linux for Power, little endian
Anolis OS
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Oracle Solaris
Slackware Linux
SUSE Linux Enterprise Server 15 SP1 LTSS
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS
SUSE Linux Enterprise Server 15 SP2 LTSS
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP3 LTSS
Basesystem Module
openSUSE Leap
Ubuntu
openEuler
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
libruby2.3 (Ubuntu package)
ruby2.3 (Ubuntu package)
rubygem-net-telnet
rubygem-rss
rubygem-abrt-doc
rubygem-abrt
rubygem-xmlrpc
rubygem-io-console
rubygem-mysql2-doc
rubygem-mysql2
rubygem-typeprof
rubygem-pg-doc
rubygem-pg
rubygem-power_assert
rubygem-did_you_mean
rubygem-irb
rubygem-bigdecimal
rubygem-rbs
rubygem-bundler
rubygem-bundler-doc
rubygem-json
rubygem-openssl
ruby2.5 (Ubuntu package)
libruby2.5 (Ubuntu package)
ruby-irb
ruby-help
ruby-devel
ruby-debugsource
ruby-debuginfo
ruby
ruby-doc
ruby-libs
ruby2.5-doc-ri
libruby2_5-2_5
ruby2.5-stdlib
ruby2.5-doc
ruby2.5-debuginfo
ruby2.5-debugsource
ruby2.5-stdlib-debuginfo
ruby2.5
libruby2_5-2_5-debuginfo
ruby2.5-devel
ruby2.5-devel-extra
libruby2.7 (Ubuntu package)
ruby2.7 (Ubuntu package)
rubygems-devel
rubygems
rh-ruby27-ruby (Red Hat package)
ruby-default-gems
rubygem-mongo-doc
rubygem-mongo
rubygem-psych
ruby (Red Hat package)
libruby3.1 (Ubuntu package)
ruby3.1 (Ubuntu package)
rubygem-rexml
rubygem-test-unit
rubygem-bson
rubygem-bson-doc
rubygem-minitest
rubygem-rdoc
rubygem-rake
Netcool Operations Insight
Isolation Segment
VMware Tanzu Application Service for VMs
IBM Cloud Pak for Multicloud Management
ruby3.0 (Ubuntu package)
libruby3.0 (Ubuntu package)
Dell EMC VxRail Appliance

Install updates from vendor's website.

cgi - addressed in versions 0.1.0.2, 0.2.2, 0.3.5
libruby2.3 (Ubuntu package) - update to Ubuntu Pro (Infra-only)
ruby2.3 (Ubuntu package) - update to Ubuntu Pro (Infra-only)
rubygem-net-telnet - addressed in versions 0.1.1-111.0.1, 0.2.0-139
rubygem-net-telnet - update to 0.1.1-118
rubygem-rss - update to 0.2.9-143.0.1
rubygem-abrt-doc - addressed in versions 0.3.0-4, 0.4.0-1
rubygem-abrt - addressed in versions 0.3.0-4, 0.4.0-1
rubygem-xmlrpc - addressed in versions 0.3.0-111.0.1, 0.3.0-139
rubygem-xmlrpc - update to 0.3.0-118
rubygem-io-console - addressed in versions 0.4.6-111.0.1, 0.5.6-139, 0.5.7-143.0.1
rubygem-io-console - update to 0.4.6-118
rubygem-mysql2-doc - addressed in versions 0.4.10-4, 0.5.3-1, 0.5.3-2.0.1
rubygem-mysql2 - addressed in versions 0.4.10-4, 0.5.3-1, 0.5.3-2.0.1
rubygem-typeprof - update to 0.15.2-143.0.1
cflinuxfs3 - update to 0.351.0
rubygem-pg-doc - addressed in versions 1.0.0-3.0.1, 1.2.3-1, 1.2.3-1.0.1
rubygem-pg - addressed in versions 1.0.0-3.0.1, 1.2.3-1, 1.2.3-1.0.1
rubygem-power_assert - addressed in versions 1.1.1-111.0.1, 1.1.7-139, 1.2.1-143.0.1
rubygem-power_assert - update to 1.1.1-118
rubygem-did_you_mean - update to 1.2.0-111.0.1
rubygem-did_you_mean - update to 1.2.0-118
rubygem-irb - addressed in versions 1.2.6-139, 1.3.5-143.0.1
rubygem-bigdecimal - addressed in versions 1.3.4-111.0.1, 2.0.0-139, 3.0.0-143.0.1
rubygem-bigdecimal - update to 1.3.4-118
ObjectScale - update to 1.4.0
rubygem-rbs - update to 1.4.0-143.0.1
Netcool Operations Insight - update to 1.6.9
rubygem-bundler - addressed in versions 1.16.1-4, 2.2.24-139, 2.2.33-143.0.1
rubygem-bundler-doc - update to 1.16.1-4
rubygem-json - addressed in versions 2.1.0-111.0.1, 2.3.0-139, 2.5.1-143.0.1
rubygem-json - update to 2.1.0-118
rubygem-openssl - addressed in versions 2.1.2-111.0.1, 2.1.4-139
rubygem-openssl - update to 2.1.2-118
IBM Cloud Pak for Multicloud Management - update to 2.3 Fix Pack 12
ruby2.5 (Ubuntu package) - update to 2.5.1-1ubuntu1.13
libruby2.5 (Ubuntu package) - update to 2.5.1-1ubuntu1.13
ruby-irb - update to 2.5.8-118
ruby-help - update to 2.5.8-118
ruby-devel - update to 2.5.8-118
ruby-debugsource - update to 2.5.8-118
ruby-debuginfo - update to 2.5.8-118
ruby - update to 2.5.8-118
ruby-irb - update to 2.5.9-111.0.1
ruby-doc - addressed in versions 2.5.9-111.0.1, 2.7.8-139, 3.0.7-143.0.1
ruby-libs - addressed in versions 2.5.9-111.0.1, 2.7.8-139, 3.0.7-143.0.1
ruby-devel - addressed in versions 2.5.9-111.0.1, 2.7.8-139, 3.0.7-143.0.1
ruby - addressed in versions 2.5.9-111.0.1, 2.7.8-139, 3.0.7-143.0.1
ruby2.5-doc-ri - update to 2.5.9-150000.4.29.1
libruby2_5-2_5 - update to 2.5.9-150000.4.29.1
ruby2.5-stdlib - update to 2.5.9-150000.4.29.1
ruby2.5-doc - update to 2.5.9-150000.4.29.1
ruby2.5-debuginfo - update to 2.5.9-150000.4.29.1
ruby2.5-debugsource - update to 2.5.9-150000.4.29.1
ruby2.5-stdlib-debuginfo - update to 2.5.9-150000.4.29.1
ruby2.5 - update to 2.5.9-150000.4.29.1
libruby2_5-2_5-debuginfo - update to 2.5.9-150000.4.29.1
ruby2.5-devel - update to 2.5.9-150000.4.29.1
ruby2.5-devel-extra - update to 2.5.9-150000.4.29.1
libruby2.7 (Ubuntu package) - update to 2.7.0-5ubuntu1.8
ruby2.7 (Ubuntu package) - update to 2.7.0-5ubuntu1.8
rubygems-devel - addressed in versions 2.7.6.3-111.0.1, 3.1.6-139, 3.2.33-143.0.1
rubygems - addressed in versions 2.7.6.3-111.0.1, 3.1.6-139, 3.2.33-143.0.1
rubygems-devel - update to 2.7.6-118
rubygems - update to 2.7.6-118
rh-ruby27-ruby (Red Hat package) - update to 2.7.8-132.el7
ruby-default-gems - addressed in versions 2.7.8-139, 3.0.7-143.0.1
rubygem-mongo-doc - update to 2.11.3-1
rubygem-mongo - update to 2.11.3-1
Isolation Segment - addressed in versions 2.11.29, 2.12.19, 2.13.14, 3.0.7
VMware Tanzu Application Service for VMs - addressed in versions 2.11.35, 2.12.24, 2.13.17, 3.0.7
ruby3.0 (Ubuntu package) - addressed in versions 3.0.2-7ubuntu2.3, 3.0.4-7ubuntu0.1
libruby3.0 (Ubuntu package) - addressed in versions 3.0.2-7ubuntu2.3, 3.0.4-7ubuntu0.1
rubygem-psych - addressed in versions 3.0.2-111.0.1, 3.1.0-139, 3.3.2-143.0.1
rubygem-psych - update to 3.0.2-118
ruby (Red Hat package) - update to 3.0.4-161.el9_2.1
ruby - update to 3.0.5
ruby - addressed in versions 3.0.5-155.fc35, 3.1.3-172.fc36, 3.1.3-172.fc37
libruby3.1 (Ubuntu package) - addressed in versions 3.1.2-2ubuntu0.22.10.1, 3.1.2-6ubuntu0.23.04.1
ruby3.1 (Ubuntu package) - addressed in versions 3.1.2-2ubuntu0.22.10.1, 3.1.2-6ubuntu0.23.04.1
rubygem-rexml - update to 3.2.5-143.0.1
rubygem-test-unit - addressed in versions 3.2.7-111.0.1, 3.3.4-139, 3.3.7-143.0.1
rubygem-test-unit - update to 3.2.7-118
OpenManage Network Integration (OMNI) - update to 3.7
Dell EMC PowerStore Family Operating System - update to 4.0.0.0-2284811
rubygem-bson - addressed in versions 4.3.0-2, 4.8.1-1
rubygem-bson-doc - addressed in versions 4.3.0-2, 4.8.1-1
rubygem-minitest - addressed in versions 5.10.3-111.0.1, 5.13.0-139, 5.14.2-143.0.1
rubygem-minitest - update to 5.10.3-118
rubygem-rdoc - addressed in versions 6.0.1.1-111.0.1, 6.2.1.1-139, 6.3.4.1-143.0.1
rubygem-rdoc - update to 6.0.1.1-118
Dell EMC VxRail Appliance - update to 8.0.201
rubygem-rake - update to 12.3.0-118
rubygem-rake - addressed in versions 12.3.3-111.0.1, 13.0.1-139, 13.0.3-143.0.1

• https://www.ruby-lang.org/en/news/2022/11/22/http-response-splitting-in-cgi-cve-2021-33621/

• HTTP response splitting in CGI gem for Ruby
• Slackware Linux update for ruby
• Ubuntu update for ruby2.3
• Ubuntu update for ruby2.5
• Multiple vulnerabilities in Cloud Foundry Foundation cflinuxfs3
• Ubuntu update for ruby2.7
• VMware Tanzu products update for Ruby
• Red Hat Software Collections update for rh-ruby27-ruby
• Ubuntu update for ruby3.1
• Multiple vulnerabilities in Oracle Solaris third-party software
• Red Hat Enterprise Linux 8 update for the ruby:2.7 module
• Multiple vulnerabilities in Netcool Operations Insight
• Multiple vulnerabilities in Oracle Linux
• SUSE update for ruby2.5
• Red Hat Enterprise Linux 8 update for the ruby:2.5 module
• Multiple vulnerabilities in IBM Cloud Pak for Network Automation
• Gentoo update for Ruby
• openEuler update for ruby
• Red Hat Enterprise Linux 8 update for the ruby:3.1 module
• Red Hat Enterprise Linux 9 update for the ruby:3.1 module
• Multiple vulnerabilities in Oracle Linux
• Red Hat Enterprise Linux 8 update for the ruby:3.0 module
• Multiple vulnerabilities in Dell PowerStore Family
• Red Hat Enterprise Linux 9 update for ruby
• Multiple vulnerabilities in Dell ObjectScale
• Fedora 37 update for ruby
• Fedora 36 update for ruby
• Fedora 35 update for ruby
• Multiple vulnerabilities in Dell OpenManage Network Integration (OMNI)
• Anolis OS update for ruby:2.7 module
• Anolis OS update for ruby:2.5 module
• Anolis OS update for ruby:3.0 module
• Multiple vulnerabilities in Dell EMC VxRail Appliance
• Multiple vulnerabilities in IBM Cloud Pak for Multicloud Management