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silentmatt / expr-eval

Mathematical expression evaluator in JavaScript
http://silentmatt.com/javascript-expression-evaluator/
MIT License
1.18k stars 239 forks source link

Possible Prototype Pollution #251

Open yoshino-s opened 3 years ago

yoshino-s commented 3 years ago

I have found a possible prototype pollution vuln in this package. With speficific input attckers can define properties on prototype, which will lead to prototype pollution.

Also I have made a tiny fix to prevent acccess prototype, which may fix this vuln.

https://github.com/418sec/expr-eval/pull/1

Should we accept the pr or write some alert to users to do not use untrusted input?

silentmatt commented 3 years ago

Thanks for finding and fixing this! I had it create a pull request (#252) and I'll make sure it gets merged and released soon.

yoshino-s commented 3 years ago

Thanks a lot.

yoshino-s commented 3 years ago

By the way, should we submit it to github security advisory and npm advisory, which will automatically alert downstream package and app? And, can we apply for an CVE ID for the vuln, which can help me a lot? Thanks a lot.

yoshino-s commented 3 years ago

any progress here?

motherthestate commented 2 years ago

Any reason why this issue is still open?

willstott101 commented 2 years ago

Despite a fix being merged there's been no release yet :(

It would be great if we could cut a 2.0.3 release