rspec/rules/S5148/html/rule.adoc
2023-11-21 15:59:01 +01:00

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include::../description.adoc[]
include::../ask-yourself.adoc[]
include::../recommended.adoc[]
== Sensitive Code Example
[source,html]
----
<a href="http://example.com/dangerous" target="_blank"> <!-- Sensitive -->
<a href="{{variable}}" target="_blank"> <!-- Sensitive -->
----
== Compliant Solution
To prevent pages from abusing ``++window.opener++``, use ``++rel=noopener++`` on ``++<a href=>++`` to force its value to be ``++null++`` on the opened pages.
[source,html]
----
<a href="http://petssocialnetwork.io" target="_blank" rel="noopener">
----
== Exceptions
No Issue will be raised when ``++href++`` contains a hardcoded relative url as there it has less chances of being vulnerable. An url is considered hardcoded and relative if it doesn't start with ``++http://++`` or ``++https://++``, and if it does not contain any of the characters {}$()[]
[source,html]
----
<a href="internal.html" target="_blank" >
----
include::../see.adoc[]
ifdef::env-github,rspecator-view[]
'''
== Implementation Specification
(visible only on this page)
include::../message.adoc[]
'''
== Comments And Links
(visible only on this page)
include::../comments-and-links.adoc[]
endif::env-github,rspecator-view[]