漏洞信息
尽管我们使用了先进的大模型技术,但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性,但请您根据实际情况进行核实和判断。
Vulnerability Title
CSS sanitizer allowlist bypass in html_sanitize_ex via non-declaration input
Vulnerability Description
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. HtmlSanitizeEx.Scrubber.CSS.scrub/1 applies its property and value allowlist through a Regex.replace over substrings matching a property: value declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. @import url(//attacker.example/style.css); survives, while the same URL inside a background: url(...) declaration is removed.
Element boundaries are resolved before the scrubber runs, so injected content does not escape the <style> element and no script executes.
This issue affects html_sanitize_ex: from 0.3.1 before 1.4.5 and from 1.5.0-rc.0 before 1.5.4.
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Vulnerability Title
René Föhring HtmlSanitizeEx 输入验证错误漏洞
Vulnerability Description
WordPress Formidable Forms是WordPress基金会开源的一款表单创建插件。 René Föhring HtmlSanitizeEx 0.3.1版本至1.5.4之前版本存在输入验证错误漏洞,该漏洞源于CSS scrubber对输出中特殊元素的中和不当,未检查不匹配属性值声明模式的输入,允许未经身份验证的远程攻击者将CSS at-rules(包括导入远程样式表)注入到提供给其他用户的页面中。
CVSS Information
N/A
Vulnerability Type
N/A