Multiple XSS vulnerabilities in Rails

Published: 2023-03-14

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-28120 CVE-2023-23913
CWE-ID	CWE-79
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	ActionView Server applications / Frameworks for developing and running applications
Vendor	Rails

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Cross-site scripting

EUVDB-ID: #VU73274

Risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-28120

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in ActiveSupport when calling a new bytesplice method on a SafeBuffer. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

ActionView: 1.0.0 - 7.0.4.2

External links

http://discuss.rubyonrails.org/t/cve-2023-28120-possible-xss-security-vulnerability-in-safebuffer-bytesplice/82469
http://github.com/rails/rails/releases/tag/v7.0.4.3
http://github.com/rails/rails/releases/tag/v6.1.7.3

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) DOM-based cross-site scripting

EUVDB-ID: #VU73275