Denial of Service Vulnerability in Actionpack Ruby Gem by Ruby on Rails
CVE-2021-22902

7.5HIGH

Key Information:

Vendor

Rubyonrails

Status
Https://github.com/rails/rails
Vendor
CVE Published:
11 June 2021

What is CVE-2021-22902?

The Actionpack Ruby Gem, a critical component of the Ruby on Rails framework, contains a vulnerability that may lead to a denial of service through its Mime type parser. When an application processes specially crafted Accept headers, it can trigger catastrophic backtracking within the regular expression engine, leading to resource exhaustion. This flaw affects versions prior to 6.0.3.7 and 6.1.3.2, potentially compromising the stability of Rails applications. It is essential for developers to update to the latest versions to mitigate this risk.

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Deploy the Patch

Affected Version(s)

https://github.com/rails/rails Fixed in 6.0.3.7, 6.1.3.2

References

https://hackerone.com/reports/1138654
x_refsource_MISC
https://discuss.rubyonrails.org/t/cve-2021-22902-possible...
x_refsource_MISC

CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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