Kingdom: Encapsulation
Encapsulation is about drawing strong boundaries. In a web browser that might mean ensuring that your mobile code cannot be abused by other mobile code. On the server it might mean differentiation between validated data and unvalidated data, between one user's data and another's, or between data users are allowed to see and data that they are not.
Cross-Site Scripting: Untrusted HTML Downloads
Abstract
Disabling the
X-Download-Options header being set to noopen, allows downloaded HTML pages to run in the security context of the site serving them.Explanation
When sites need to be able to serve downloads to users, the option to open them means that any served files that run in the browser could be opened in the current browser in the same security context as the site.
If an attacker is able to manipulate the downloaded files, they can insert HTML or scripts that run in the browser to act as a cross-site scripting attack, stealing or manipulating information in the current session.
Example 1: The following example explicitly disables protections against served downloads running in the browser:
If an attacker is able to manipulate the downloaded files, they can insert HTML or scripts that run in the browser to act as a cross-site scripting attack, stealing or manipulating information in the current session.
Example 1: The following example explicitly disables protections against served downloads running in the browser:
var express = require('express');
var app = express();
var helmet = require('helmet');
app.use(helmet({
ieNoOpen: false
}));
...
References
[1] Standards Mapping - Common Weakness Enumeration CWE ID 79, CWE ID 80
[2] Standards Mapping - Common Weakness Enumeration Top 25 2019 [2] CWE ID 079
[3] Standards Mapping - Common Weakness Enumeration Top 25 2020 [1] CWE ID 079
[4] Standards Mapping - Common Weakness Enumeration Top 25 2021 [2] CWE ID 079
[5] Standards Mapping - Common Weakness Enumeration Top 25 2022 [2] CWE ID 079
[6] Standards Mapping - Common Weakness Enumeration Top 25 2023 [2] CWE ID 079
[7] Standards Mapping - Common Weakness Enumeration Top 25 2024 [1] CWE ID 079
[8] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001310, CCI-002754
[9] Standards Mapping - FIPS200 SI
[10] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[11] Standards Mapping - NIST Special Publication 800-53 Revision 4 SI-10 Information Input Validation (P1)
[12] Standards Mapping - NIST Special Publication 800-53 Revision 5 SI-10 Information Input Validation
[13] Standards Mapping - OWASP Application Security Verification Standard 4.0 5.3.3 Output Encoding and Injection Prevention Requirements (L1 L2 L3), 5.3.6 Output Encoding and Injection Prevention Requirements (L1 L2 L3)
[14] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[15] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[16] Standards Mapping - OWASP Top 10 2004 A4 Cross Site Scripting
[17] Standards Mapping - OWASP Top 10 2007 A1 Cross Site Scripting (XSS)
[18] Standards Mapping - OWASP Top 10 2010 A2 Cross-Site Scripting (XSS)
[19] Standards Mapping - OWASP Top 10 2013 A3 Cross-Site Scripting (XSS)
[20] Standards Mapping - OWASP Top 10 2017 A7 Cross-Site Scripting (XSS)
[21] Standards Mapping - OWASP Top 10 2021 A03 Injection
[22] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.4
[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.1
[24] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.7
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.7
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.7
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.7
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.7
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[31] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[32] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection
[33] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection
[34] Standards Mapping - SANS Top 25 2009 Insecure Interaction - CWE ID 079
[35] Standards Mapping - SANS Top 25 2010 Insecure Interaction - CWE ID 079
[36] Standards Mapping - SANS Top 25 2011 Insecure Interaction - CWE ID 079
[37] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I, APP3580 CAT I
[38] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3580 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3580 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3580 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3580 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3580 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3580 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[58] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002490 CAT I, APSC-DV-002560 CAT I
[59] Standards Mapping - Web Application Security Consortium Version 2.00 Cross-Site Scripting (WASC-08)
[60] Standards Mapping - Web Application Security Consortium 24 + 2 Cross-Site Scripting
desc.dataflow.javascript.cross_site_scripting_untrusted_html_downloads