Cookie Name Handling Flaw in Ruby and CGI Gem
CVE-2021-41819

7.5HIGH

Key Information:

Vendor

Ruby-lang

Status
Ruby
Cgi
Vendor
CVE Published:
1 January 2022

What is CVE-2021-41819?

The CGI::Cookie.parse method in Ruby prior to version 2.6.8 has a weakness in how it processes security prefixes in cookie names. This vulnerability can result in incorrect handling of cookies, potentially allowing unauthorized access to sensitive data. Applications utilizing the CGI gem version 0.3.0 or earlier are also affected, making it essential for developers to review their cookie parsing mechanisms and implement necessary updates to mitigate the risk of cookie spoofing attacks.

References

https://hackerone.com/reports/910552
https://www.ruby-lang.org/en/news/2021/11/24/cookie-prefi...
https://security.netapp.com/advisory/ntap-20220121-0003/

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.