Improper Authentication Affecting cgi package, versions >=0.3.0, <0.3.1>=0.2.0, <0.2.1<0.1.1


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
0.77% (82nd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Improper Authentication vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-RUBY-CGI-2359027
  • published23 Jan 2022
  • disclosed21 Jan 2022
  • creditooooooo_q

Introduced: 21 Jan 2022

CVE-2021-41819  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade cgi to version 0.3.1, 0.2.1, 0.1.1 or higher.

Overview

cgi is a Support for the Common Gateway Interface protocol.

Affected versions of this package are vulnerable to Improper Authentication. CGI::Cookie.parse mishandles security prefixes in cookie names by applying URL decoding to cookie names. An attacker could exploit this vulnerability to spoof security prefixes in cookie names, which may be able to trick a vulnerable application.

CVSS Scores

version 3.1