CVE-2021-33621 – cgi

Package

Manager: gem
Name: cgi
Vulnerable Version: >=0.3.0 <0.3.5 || >=0.2.0 <0.2.2 || >=0 <0.1.0.2

Severity

Level: High

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

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

EPSS: 0.00854 pctl0.74189

Details

HTTP response splitting in CGI Ruby gem cgi.rb prior to versions 0.3.5, 0.2.2 and 0.1.0.2 allow HTTP header injection. If a CGI application using the CGI library inserts untrusted input into the HTTP response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. This issue has been patched in versions 0.3.5, 0.2.2 and 0.1.0.2.

Metadata

Created: 2022-11-19T00:30:55Z
Modified: 2023-01-26T21:12:34Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/11/GHSA-vc47-6rqg-c7f5/GHSA-vc47-6rqg-c7f5.json
CWE IDs: ["CWE-436", "CWE-74"]
Alternative ID: GHSA-vc47-6rqg-c7f5
Finding: F184
Auto approve: 1