Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-41817 |
CWE-ID | CWE-185 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Date Web applications / Modules and components for CMS |
Vendor | Ruby |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU59824
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-41817
CWE-ID:
CWE-185 - Incorrect Regular Expression
Exploit availability: No
DescriptionThe 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.
Cybersecurity Help is currently unaware of any official solution to address this vulnerability..
Vulnerable software versionsDate: 2.0.0 - 3.2.0
External linkshttp://hackerone.com/reports/1254844
http://www.ruby-lang.org/en/news/2021/11/15/date-parsing-method-regexp-dos-cve-2021-41817/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.