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CVE-2022-44571

Published: 9 February 2023

There is a denial of service vulnerability in the Content-Disposition parsingcomponent of Rack fixed in 2.0.9.2, 2.1.4.2, 2.2.4.1, 3.0.0.1. This could allow an attacker to craft an input that can cause Content-Disposition header parsing in Rackto take an unexpected amount of time, possibly resulting in a denial ofservice attack vector. This header is used typically used in multipartparsing. Any applications that parse multipart posts using Rack (virtuallyall Rails applications) are impacted.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
ruby-rack
Launchpad, Ubuntu, Debian
kinetic Ignored
(end of life, was needed)
bionic
Released (1.6.4-4ubuntu0.2+esm4)
Available with Ubuntu Pro
focal
Released (2.0.7-2ubuntu0.1+esm3)
Available with Ubuntu Pro
jammy
Released (2.1.4-5ubuntu1+esm3)
Available with Ubuntu Pro
upstream
Released (2.0.9.2, 2.1.4.2, 2.2.6.1, 3.0.4.1)
trusty
Released (1.5.2-3+deb8u3ubuntu1~esm6)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (1.6.4-3ubuntu0.2+esm4)
Available with Ubuntu Pro
mantic Not vulnerable
(2.2.4-3)
lunar Not vulnerable
(2.2.4-3)
Patches:
upstream: https://github.com/rack/rack/commit/4e33ad10bf5f16d25c156f905bcc548e7f787bc3 (v2.0.9.2)
upstream: https://github.com/rack/rack/commit/9b5fb5c7ef0e39b959a6c5c0005d9af44a29d6f8 (v2.1.4.2)
upstream: https://github.com/rack/rack/commit/ee25ab9a7ee981d7578f559701085b0cf39bde77 (v2.2.6.1)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H