QID 356252

Date Published: 2023-09-28

QID 356252: Amazon Linux Security Advisory for ruby : ALASRUBY2.6-2023-002

A flaw was found in ruby, where the date object was found to be vulnerable to a regular expression denial of service (redos) during the parsing of dates.
This flaw allows an attacker to hang a ruby application by providing a specially crafted date string.
The highest threat to this vulnerability is system availability. (
( CVE-2021-41817) cgi::cookie.parse in ruby through 2.6.8 mishandles security prefixes in cookie names.
This also affects the cgi gem through 0.3.0 for ruby. (
( CVE-2021-41819)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    Please refer to Amazon advisory: ALASRUBY2.6-2023-002 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 356252

    CVE-2021-41819 | CVE-2021-41817 |
    Software Advisories
    Advisory ID Software Component Link
    ALASRUBY2.6-2023-002 amazon linux 2 URL Logo alas.aws.amazon.com/AL2/ALASRUBY2.6-2023-002.html
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