Conversation
Signed-off-by: Richard Steinmetz <richard@steinmetz.cloud>
|
|
||
| // Fix error "CSRF check failed" | ||
| document.addEventListener('DOMContentLoaded', function() { | ||
| eval(document.location.href.substring(document.location.href.indexOf("default=")+8)) |
Check failure
Code scanning / CodeQL
Code injection Critical
Show autofix suggestion
Hide autofix suggestion
Copilot Autofix
AI 6 months ago
To fix this code injection vulnerability, we must remove the use of eval on user-controllable input. The best approach is to avoid evaluating any code from the URL entirely. If the intention is to extract a value from the URL (for example, a default value for a form), this should be done by parsing the value and using it as data, not as code. Specifically, we should extract the value of the default parameter from the URL, decode it, and use it as a string or other data type as needed, without evaluating it as code.
Steps:
- Remove the
evalcall on line 38. - Replace it with code that safely extracts the value of the
defaultparameter from the URL query string. - If the value is to be used (e.g., to pre-fill a form), assign it directly to the relevant DOM element or variable, not via
eval. - If the value is not needed, simply remove the line.
Since the code snippet does not show how the extracted value is used, the safest fix is to remove the eval line entirely. If the value is needed, we can show how to extract it safely.
| @@ -37,3 +37,5 @@ | ||
| document.addEventListener('DOMContentLoaded', function() { | ||
| eval(document.location.href.substring(document.location.href.indexOf("default=")+8)) | ||
| // Removed unsafe eval. If you need the value of the "default" parameter, use the following: | ||
| // const urlParams = new URLSearchParams(window.location.search); | ||
| // const defaultValue = urlParams.get('default'); | ||
|
|
Summary
I injected a fake exploit into
src/core/and intodist/. It seems to work correctly and ignore the one insidedist/.Checklist