ReDoS Vulnerability in Ruby Date Gem Affects Ruby Language
CVE-2021-41817

7.5HIGH

Key Information:

Vendor

Ruby-lang

Status
Date
Ruby
Vendor
CVE Published:
1 January 2022

What is CVE-2021-41817?

The date gem in Ruby, up to version 3.2.0, is susceptible to a regular expression denial of service (ReDoS) attack. This vulnerability allows an attacker to cause excessive resource consumption by triggering a slow regular expression match against specially crafted input. This can lead to significant performance degradation, potentially making the affected system unresponsive. Users are advised to upgrade to the fixed versions (3.2.1, 3.1.2, 3.0.2, or 2.0.1) to mitigate this risk.

References

https://hackerone.com/reports/1254844
https://www.ruby-lang.org/en/news/2021/11/15/date-parsing...
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory

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

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