Multiple vulnerabilities in Ruby on Rails
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2021-22880 CVE-2021-22881 |
| CWE-ID | CWE-185 CWE-601 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Ruby on Rails Universal components / Libraries / Scripting languages |
| Vendor | Rails |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Incorrect Regular Expression
EUVDB-ID: #VU50606
Risk: Medium
CVSSv4.0: 6.6 [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-2021-22880
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 incorrect regular expression for money processing format in the PostgreSQL adapter. A remote attacker can pass specially crafted input to the application and perform a regular expression denial of service (ReDOS) attack.
Install updates from vendor's website.
Vulnerable software versionsRuby on Rails: 5.0.0 rc1 - 6.1.2
CPE2.3- cpe:2.3:a:rails:ruby_on_rails:5.0.7.2:*:*:*:*:*:*:*
- cpe:2.3:a:rails:ruby_on_rails:5.1.7:*:*:*:*:*:*:*
- cpe:2.3:a:rails:ruby_on_rails:5.2.4.4:*:*:*:*:*:*:*
- cpe:2.3:a:rails:ruby_on_rails:6.0.3.4:*:*:*:*:*:*:*
- cpe:2.3:a:rails:ruby_on_rails:6.1.2:*:*:*:*:*:*:*
https://github.com/rails/rails/releases/tag/v6.1.2.1
https://github.com/rails/rails/releases/tag/v6.0.3.5
https://github.com/rails/rails/releases/tag/v5.2.4.5
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.
2) Open redirect
EUVDB-ID: #VU50607
Risk: Low
CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-22881
CWE-ID:
CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to redirect victims to arbitrary URL.
The vulnerability exists due to improper sanitization of user-supplied data, when the allowed host starts with a dot. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.
Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.
MitigationInstall updates from vendor's website.
Vulnerable software versionsRuby on Rails: 6.0.0 - 6.1.2
CPE2.3https://github.com/rails/rails/releases/tag/v6.1.2.1
https://github.com/rails/rails/releases/tag/v6.0.3.5
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.
