CVE-2023-24538 PoC — Backticks not treated as string delimiters in html/template

Source

https://github.com/skulkarni-mv/goIssue_kirkstone

Associated Vulnerability

Title:Backticks not treated as string delimiters in html/template (CVE-2023-24538)
Description:Templates do not properly consider backticks (`) as Javascript string delimiters, and do not escape them as expected. Backticks are used, since ES6, for JS template literals. If a template contains a Go template action within a Javascript template literal, the contents of the action can be used to terminate the literal, injecting arbitrary Javascript code into the Go template. As ES6 template literals are rather complex, and themselves can do string interpolation, the decision was made to simply disallow Go template actions from being used inside of them (e.g. "var a = {{.}}"), since there is no obviously safe way to allow this behavior. This takes the same approach as github.com/google/safehtml. With fix, Template.Parse returns an Error when it encounters templates like this, with an ErrorCode of value 12. This ErrorCode is currently unexported, but will be exported in the release of Go 1.21. Users who rely on the previous behavior can re-enable it using the GODEBUG flag jstmpllitinterp=1, with the caveat that backticks will now be escaped. This should be used with caution.

Description

go CVE-2023-24538 patch issue resolver - Kirkstone

Readme

OpenEmbedded-Core
=================

OpenEmbedded-Core is a layer containing the core metadata for current versions
of OpenEmbedded. It is distro-less (can build a functional image with
DISTRO = "nodistro") and contains only emulated machine support.

For information about OpenEmbedded, see the OpenEmbedded website:
    https://www.openembedded.org/

The Yocto Project has extensive documentation about OE including a reference manual
which can be found at:
    https://docs.yoctoproject.org/


Contributing
------------

Please refer to
https://www.openembedded.org/wiki/How_to_submit_a_patch_to_OpenEmbedded
for guidelines on how to submit patches.

Mailing list:

    https://lists.openembedded.org/g/openembedded-core

Source code:

    https://git.openembedded.org/openembedded-core/

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