CVE-2022-44571

Description

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.

CVSS Metrics

• v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 3.12%• Percentile: 87%

Techniques & Countermeasures

• CWE-1333•Inefficient Regular Expression Complexity

  The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.

• CWE-400•Uncontrolled Resource Consumption

  The product does not properly control the allocation and maintenance of a limited resource.

Affected Systems

• rack•rack

  ≥ 2.0.0, < 2.0.9.2 | ≥ 2.1.0, < 2.1.4.2 | ≥ 2.2.0, < 2.2.6.1 | ≥ 3.0.0.0, < 3.0.4.1

References (3)

• https://discuss.rubyonrails.org/t/cve-2022-44571-possible-denial-of-service-vulnerability-in-rack-content-disposition-parsing/82126
• https://www.debian.org/security/2023/dsa-5530
• https://security.netapp.com/advisory/ntap-20231208-0013/