CWE-80 Web页面中脚本相关HTML标签转义处理不恰当(基本跨站脚本) 类漏洞列表 458

CWE-80 Web页面中脚本相关HTML标签转义处理不恰当(基本跨站脚本) 类弱点 458 条 CVE 漏洞汇总，含 AI 中文分析。

常见影响 (1)

Confidentiality, Integrity, Availability Read Application Data, Execute Unauthorized Code or Commands

An attacker could insert special characters that are processed client-side in the context of the user's session.

缓解措施 (4)

Implementation Carefully check each input parameter against a rigorous positive specification (allowlist) defining the specific characters and format allowed. All input should be neutralized, not just parameters that the user is supposed to specify, but all data in the request, including hidden fields, cookies, headers, the URL itself, and so forth. A common mistake that leads to continuing XSS vulnerabilities i…

Implementation Use and specify an output encoding that can be handled by the downstream component that is reading the output. Common encodings include ISO-8859-1, UTF-7, and UTF-8. When an encoding is not specified, a downstream component may choose a different encoding, either by assuming a default encoding or automatically inferring which encoding is being used, which can be erroneous. When the encodings are i…

Implementation With Struts, write all data from form beans with the bean's filter attribute set to true.

Implementation To help mitigate XSS attacks against the user's session cookie, set the session cookie to be HttpOnly. In browsers that support the HttpOnly feature (such as more recent versions of Internet Explorer and Firefox), this attribute can prevent the user's session cookie from being accessible to malicious client-side scripts that use document.cookie. This is not a complete solution, since HttpOnly is n…

Effectiveness: Defense in Depth

代码示例 (1)

In the following example, a guestbook comment isn't properly encoded, filtered, or otherwise neutralized for script-related tags before being displayed in a client browser.

<% for (Iterator i = guestbook.iterator(); i.hasNext(); ) { Entry e = (Entry) i.next(); %> <p>Entry #<%= e.getId() %></p> <p><%= e.getText() %></p> <% } %>

Bad · JSP