Splunk and CSP functions


I'm running nginx with the below security config.

add_header X-Frame-Options "SAMEORIGIN" always;
add_header X-XSS-Protection "1; mode=block" always;
add_header X-Content-Type-Options "nosniff" always;
add_header Referrer-Policy "no-referrer-when-downgrade" always;
add_header Content-Security-Policy "default-src 'self' http: https: data: blob: 'unsafe-inline'" always;
add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always;

When this file is enabled within nginx Splunk web will throw

This browser is not supported by
Splunk. Please refer to the list of
Supported Browsers.

Console shows
EvalError: call to Function() blocked by CSP common.js:1:30458
Content Security Policy: The page’s settings blocked the loading of a resource at eval (“default-src”).

Mozilla seems to say that the function call is banned ... via

The function constructor is banned
You may not use the Function() constructor. Using it will throw a security error.

Sooo anyone run into this before ? I'm running Splunk Ent 7.2.3

0 Karma


Chrome seems to debug this a bit differently

common.js:1 Uncaught EvalError: Refused to evaluate a string as JavaScript because 'unsafe-eval' is not an allowed source of script in the following Content Security Policy directive: "default-src 'self' http: https: data: blob: 'unsafe-inline'".

    at new Function (<anonymous>)
    at Function._.template (common.js:1)
    at child.<anonymous> (common.js:45)
    at child.compileTemplate (common.js:1)
    at child.constructor (common.js:44)
    at new child (common.js:30)
    at (account.js:3)
    at child.execute (common.js:30)
    at Object.callback (common.js:30)
    at common.js:30
0 Karma
Get Updates on the Splunk Community!

Improve Your Security Posture

Watch NowImprove Your Security PostureCustomers are at the center of everything we do at Splunk and security ...

Maximize the Value from Microsoft Defender with Splunk

 Watch NowJoin Splunk and Sens Consulting for this Security Edition Tech TalkWho should attend:  Security ...

This Week's Community Digest - Splunk Community Happenings [6.27.22]

Get the latest news and updates from the Splunk Community here! News From Splunk Answers ✍️ Splunk Answers is ...