#VU101267 Cross-site scripting in rails-html-sanitizer - CVE-2024-53985

Vulnerability identifier: #VU101267

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-53985

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
rails-html-sanitizer
Universal components / Libraries / Programming Languages & Components

Vendor: Rails

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. 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

rails-html-sanitizer: 1.6.0

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External links
https://github.com/rails/rails-html-sanitizer/commit/b0220b8850d52199a15f83c472d175a4122dd7b1
https://github.com/rails/rails-html-sanitizer/commit/cd18b0ef00aad1d4a9e1c5d860cd23f80f63c505
https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-w8gc-x259-rc7x

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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.