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Category: CDN Resource API Endpoint
Keywords: error found thats found1 server requested
Last fetched: 2019-07-11T16:24:55.113366+00:00
HTTP status: 5 Sub-resource URL
Access-Control-Allow-Origin: *
The header sets permissive AJAX access by using wildcard origin *
. It may be OK if the website is a publicly accessible REST API but otherwise it should be not present at all
Controls origins (websites) that are allowed to load data from this web service over JavaScript-based APIs as part of Cross-Origin Resource Sharing (CORS) standard. By default, a web browser will refuse to load data over XmlHttpRequest
from a website that is not in the same origin, which is a precaution against various types of data stealing attacks. The target server has to explicitly allow the origin domain using the Access-Control-Allow-Origin
(ACAO) header, or it may allow all origins to access it using a wildcard *
. The latter however creates a potential security issue if the website in question is transactional and processing sensitive data, so the wildcard should be only used on websites consciously offering public APIs.
Server: ESF
Announces web server software and optionally version details.
Read more...X-XSS-Protection: 0
XSS auditor is disabled
0
Controls an Cross-Site Scripting (XSS) filters built into the majority of web browsers. The filter is usually turned on by default anyway, but requirement to set the header to 1
became part of canonical set of "secure" HTTP headers. Over time, vulnerabilities in the "sanitizing" mode filter were found, so 1; mode=block
became the recommended value. Some companies decided that they don't really need a browser-side XSS filter to mess with their web services which are XSS-free anyway and they became consciously disabling the XSS filter by setting the header to 0
.
X-Frame-Options: SAMEORIGIN
Clickjacking protection is enabled
+2
Instructs the browser if the current website can be embedded in HTML frame by another website. Since this allows the parent website to control the framed page, this creates a potential for data theft attacks ("clickjacking") and most sensitive websites won't allow them to be framed at all (deny
) or just allow parts of them to be embedded in frames created by themselves only (samesite
).
Transport Layer Security (TLS) is enabled
+2X-Content-Type-Options
header is missing