Incorrect Regular Expression in Date - CVE-2021-41817
Published: January 19, 2022
Vulnerability identifier: #VU59824
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-41817
CWE-ID: CWE-185
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Date
Date
Software vendor:
Ruby
Ruby
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient input validation when processing regular expressions on date parsing methods. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability..