CVE-2022-44572

Description

A denial of service vulnerability in the multipart parsing component of Rack fixed in 2.0.9.2, 2.1.4.2, 2.2.4.1 and 3.0.0.1 could allow an attacker tocraft input that can cause RFC2183 multipart boundary parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. Any applications that parse multipart posts using Rack (virtually all 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: 0.26%• Percentile: 49%

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

  < 2.0.9.2 | ≥ 2.1.0, < 2.1.4.2 | ≥ 2.2.0, < 2.2.4.1

References (3)

• https://hackerone.com/reports/1639882
• https://www.debian.org/security/2023/dsa-5530
• https://security.netapp.com/advisory/ntap-20231208-0014/