[BUG][DoS] Bad characters in document causes Search Error

[albgus]

Describe the bug

Trying to search logs with certain illegal characters causes a Search Error. This means that logs submitted by malicious actors or exploit hunters may cause a kind of Denial of Service of OpenSearch dashboards.

The error shown is this:

SyntaxError: Bad escaped character in JSON at position 410488 (line 1 column 410489)
    at fetch_Fetch.fetchResponse (https://staging-opensearch.i.example.com/7969/bundles/core/core.entry.js:15:391967)
    at async interceptResponse (https://staging-opensearch.i.example.com/7969/bundles/core/core.entry.js:15:386867)
    at async https://staging-opensearch.i.example.com/7969/bundles/core/core.entry.js:15:389834

The offending message is this:

"message": "client sent invalid method while reading client request line, client: 10.x.x.x, server: _, request: \"\x03\0\0/*�\0\0\0\0\0Cookie: mstshash=Administr\"",

Specifically it seems to be \x03 (ASCII End of text) that triggers the error (column 410489 is exactly at the start of the escape sequence).

Expected behavior
OpenSearch dashboards should be able to safely handling logs, even for sources that may be connected to the internet and receive malicious data.

OpenSearch Version
2.17.1

Dashboards Version
2.17.1

Plugins

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Screenshots

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Host/Environment (please complete the following information):

• OS: macOS 14.7
• Browser and version: Google Chrome 130.0.6723.69