CVE-2022-30122: [CVE-2022-30122] Denial of Service Vulnerability in Rack Multipart Parsing

Ubuntu Security Notice 7036-1 - It was discovered that Rack was not properly parsing data when processing multipart POST requests. If a user or automated system were tricked into sending a specially crafted multipart POST request to an application using Rack, a remote attacker could possibly use this issue to cause a denial of service. It was discovered that Rack was not properly escaping untrusted data when performing logging operations, which could cause shell escaped sequences to be written to a terminal. If a user or automated system were tricked into sending a specially crafted request to an application using Rack, a remote attacker could possibly use this issue to execute arbitrary code in the machine running the application.

Gentoo Linux Security Advisory 202310-18 - Multiple vulnerabilities have been discovered in Rack, the worst of which can lead to sequence injection in logging components. Versions greater than or equal to 2.2.3.1 are affected.

Debian Linux Security Advisory 5530-1 - Several vulnerabilities were discovered in ruby-rack, a modular Ruby webserver interface, which may result in denial of service and shell escape sequence injection.

Red Hat Security Advisory 2023-1486-01 - Grafana is an open source, feature rich metrics dashboard and graph editor for Graphite, InfluxDB & OpenTSDB. Django is a high-level Python Web framework that encourages rapid development and a clean, pragmatic design. It focuses on automating as much as possible and adhering to the DRY principle. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks. Issues addressed include HTTP request smuggling, code execution, and denial of service vulnerabilities.

Ubuntu Security Notice 5896-1 - It was discovered that Rack was not properly parsing data when processing multipart POST requests. If a user or automated system were tricked into sending a specially crafted multipart POST request to an application using Rack, a remote attacker could possibly use this issue to cause a denial of service. It was discovered that Rack was not properly escaping untrusted data when performing logging operations, which could cause shell escaped sequences to be written to a terminal. If a user or automated system were tricked into sending a specially crafted request to an application using Rack, a remote attacker could possibly use this issue to execute arbitrary code in the machine running the application.

Updated Satellite 6.11 packages that fix several bugs are now available for Red Hat Satellite.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-30122: rubygem-rack: crafted multipart POST request may cause a DoS * CVE-2022-31163: rubygem-tzinfo: arbitrary code execution

There is a possible denial of service vulnerability in the multipart parsing component of Rack. This vulnerability has been assigned the CVE identifier CVE-2022-30122. Versions Affected: >= 1.2 Not affected: < 1.2 Fixed Versions: 2.0.9.1, 2.1.4.1, 2.2.3.1 ## Impact Carefully crafted multipart POST requests can cause Rack's multipart parser to take much longer than expected, leading to a possible denial of service vulnerability. Impacted code will use Rack's multipart parser to parse multipart posts. This includes directly using the multipart parser like this: ``` params = Rack::Multipart.parse_multipart(env) ``` But it also includes reading POST data from a Rack request object like this: ``` p request.POST # read POST data p request.params # reads both query params and POST data ``` All users running an affected release should either upgrade or use one of the workarounds immediately. ## Workarounds There are no feasible workarounds for this issue.