RubyGems cgi gem HTTP response splitting | CVE-2021-33621
NAME
RubyGems cgi gem HTTP response splitting
- Platforms Affected:
RubyGems cgi gem 0.1.0
RubyGems cgi gem 0.1.0.1
RubyGems cgi gem 0.1.1
RubyGems cgi gem 0.2.1
RubyGems cgi gem 0.3.3 - Risk Level:
8.8 - Exploitability:
Unproven - Consequences:
Gain Access
DESCRIPTION
RubyGems cgi gem is vulnerable to HTTP response splitting attacks. A remote authenticated attacker could exploit this vulnerability to inject arbitrary HTTP/1.1 response header in some form and cause the server to return a split response, once the URL is clicked. This would allow the attacker to perform further attacks, such as Web cache poisoning or cross-site scripting, and possibly obtain sensitive information.
CVSS 3.0 Information
- Privileges Required: Low
- User Interaction: None
- Scope: Unchanged
- Access Vector: Network
- Access Complexity: Low
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- Remediation Level: Official Fix
MITIGATION
Upgrade to the latest version of cgi gem (0.1.0.2, 0.2.2, 0.3.5 or later), available from the RubyGems Web site. See References.
- Reference Link:
https://www.ruby-lang.org/en/news/2022/11/22/http-response-splitting-in-cgi-cve-2021-33621/ - Reference Link:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33621
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