CVE-2022-30122 – rack

Package

Manager: gem
Name: rack
Vulnerable Version: >=1.2 <2.0.9.1 || >=2.1 <2.1.4.1 || >=2.2 <2.2.3.1

Severity

Level: High

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

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00919 pctl0.75078

Details

Denial of Service Vulnerability in Rack Multipart Parsing 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.

Metadata

Created: 2022-05-27T16:36:52Z
Modified: 2023-08-28T13:59:06Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-hxqx-xwvh-44m2/GHSA-hxqx-xwvh-44m2.json
CWE IDs: ["CWE-1333", "CWE-400"]
Alternative ID: GHSA-hxqx-xwvh-44m2
Finding: F002
Auto approve: 1