CVE-2023-22796

A regular expression based DoS vulnerability in Active Support <6.1.7.1 and <7.0.4.1. A specially crafted string passed to the underscore method can cause the regular expression engine to enter a state of catastrophic backtracking. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability.

A toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Rich support for multibyte strings, internationalization, time zones, and testing.

Security Fix(es):

A regular expression based DoS vulnerability in Active Support <6.1.7.1 and <7.0.4.1. A specially crafted string passed to the underscore method can cause the regular expression engine to enter a state of catastrophic backtracking. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability.(CVE-2023-22796)

A toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Rich support for multibyte strings, internationalization,time zones, and testing.

Security Fix(es):

A regular expression based DoS vulnerability in Active Support <6.1.7.1 and <7.0.4.1. A specially crafted string passed to the underscore method can cause the regular expression engine to enter a state of catastrophic backtracking. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability.(CVE-2023-22796)

A toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Rich support for multibyte strings, internationalization,time zones, and testing.

Security Fix(es):

A regular expression based DoS vulnerability in Active Support <6.1.7.1 and <7.0.4.1. A specially crafted string passed to the underscore method can cause the regular expression engine to enter a state of catastrophic backtracking. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability.(CVE-2023-22796)

A toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Rich support for multibyte strings, internationalization, time zones, and testing.

Security Fix(es):

A regular expression based DoS vulnerability in Active Support <6.1.7.1 and <7.0.4.1. A specially crafted string passed to the underscore method can cause the regular expression engine to enter a state of catastrophic backtracking. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability.(CVE-2023-22796)

A regular expression based DoS vulnerability in Active Support <6.1.7.1 and <7.0.4.1. A specially crafted string passed to the underscore method can cause the regular expression engine to enter a state of catastrophic backtracking. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability.

There is a possible regular expression based DoS vulnerability in Active Support. This vulnerability has been assigned the CVE identifier CVE-2023-22796.

Versions Affected: All Not affected: None Fixed Versions: 5.2.8.15 (Rails LTS, which is a paid service and not part of the rubygem), 6.1.7.1, 7.0.4.1 Impact

A specially crafted string passed to the underscore method can cause the regular expression engine to enter a state of catastrophic backtracking. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability.

This affects String#underscore, ActiveSupport::Inflector.underscore, String#titleize, and any other methods using these.

All users running an affected release should either upgrade or use one of the workarounds immediately. Releases

The FIXED releases are available at the normal locations. Workarounds

There are no feasible workarounds for this issue.

Users on Ruby 3.2.0 or greater may be able to reduce the impact by configuring Regexp.timeout. Patches

To aid users who aren’t able to upgrade immediately we have provided patches for the two supported release series. They are in git-am format and consist of a single changeset.

6-1-Avoid-regex-backtracking-in-Inflector.underscore.patch - Patch for 6.1 series
7-0-Avoid-regex-backtracking-in-Inflector.underscore.patch - Patch for 7.0 series

Please note that only the 7.0.Z and 6.1.Z series are supported at present, and 6.0.Z for severe vulnerabilities. Users of earlier unsupported releases are advised to upgrade as soon as possible as we cannot guarantee the continued availability of security fixes for unsupported releases.

These are all security issues fixed in the ruby3.1-rubygem-activesupport-7.0-7.0.4.1-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the ruby3.3-rubygem-activesupport-7.0-7.0.8.4-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the ruby3.4-rubygem-activesupport-7.0-7.0.8.6-1.3 package on the GA media of openSUSE Tumbleweed.

Rocky Enterprise Software Foundation Satellite is a systems management tool for Linux-based infrastructure. It allows for provisioning, remote management, and monitoring of multiple Linux deployments with a single centralized tool.

Security Fix(es):

• golang: net/http, x/net/http2: rapid stream resets can cause excessive work (CVE-2023-44487) (CVE-2023-39325)

• HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack) (CVE-2023-44487)

• GitPython: Insecure non-multi options in clone and clone_from is not blocked (CVE-2023-40267)

• kubeclient: kubeconfig parsing error can lead to MITM attacks (CVE-2022-0759)

• foreman: OS command injection via ct_command and fcct_command (CVE-2022-3874)

• ruby-git: code injection vulnerability (CVE-2022-46648)

• ruby-git: code injection vulnerability (CVE-2022-47318)

• Foreman: Arbitrary code execution through templates (CVE-2023-0118)

• rubygem-activerecord: SQL Injection (CVE-2023-22794)

• openssl: c_rehash script allows command injection (CVE-2022-1292)

• openssl: the c_rehash script allows command injection (CVE-2022-2068)

• Pulp:Tokens stored in plaintext (CVE-2022-3644)

• satellite: Blind SSRF via Referer header (CVE-2022-4130)

• python-future: remote attackers can cause denial of service via crafted Set-Cookie header from malicious web server (CVE-2022-40899)

• golang: net/http: excessive memory growth in a Go server accepting HTTP/2 requests (CVE-2022-41717)

• rubygem-activerecord: Denial of Service (CVE-2022-44566)

• rubygem-rack: denial of service in Content-Disposition parsing (CVE-2022-44570)

• rubygem-rack: denial of service in Content-Disposition parsing (CVE-2022-44571)

• rubygem-rack: denial of service in Content-Disposition parsing (CVE-2022-44572)

• Foreman: Stored cross-site scripting in host tab (CVE-2023-0119)

• puppet: Puppet Server ReDoS (CVE-2023-1894)

• rubygem-actionpack: Denial of Service in Action Dispatch (CVE-2023-22792)

• rubygem-actionpack: Denial of Service in Action Dispatch (CVE-2023-22795)

• rubygem-activesupport: Regular Expression Denial of Service (CVE-2023-22796)

• rubygem-globalid: ReDoS vulnerability (CVE-2023-22799)

• rubygem-rack: Denial of service in Multipart MIME parsing (CVE-2023-27530)

• rubygem-rack: denial of service in header parsing (CVE-2023-27539)

• golang: net/http: insufficient sanitization of Host header (CVE-2023-29406)

• sqlparse: Parser contains a regular expression that is vulnerable to ReDOS (Regular Expression Denial of Service) (CVE-2023-30608)

• python-django: Potential bypass of validation when uploading multiple files using one form field (CVE-2023-31047)

• python-requests: Unintended leak of Proxy-Authorization header (CVE-2023-32681)

• python-django: Potential regular expression denial of service vulnerability in EmailValidator/URLValidator (CVE-2023-36053)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

This update also fixes several bugs and adds various enhancements. Documentation for these changes is available from the Release Notes document linked to in the References section.

This update for rubygem-activesupport-5_1 fixes the following issues:

• CVE-2023-22796: Fixed a potential denial of service when passing a crafted input to the underscore method due to an inefficient regular expression (bsc#1207454).

This update for rubygem-activesupport-4_2 fixes the following issues:

• CVE-2023-22796: Fixed a potential denial of service when passing a crafted input to the underscore method due to an inefficient regular expression (bsc#1207454).