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

Description

The 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Ruby on Rails: 5.0.0.beta1 - 6.1.2

CPE2.3 External links

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

Description

The 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Ruby on Rails: 6.0.0 - 6.1.2

CPE2.3 External links

https://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.



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