GHSA-x5r6-x823-9848

Arbitrary Code Execution in json-ptr

Source: GitHub Advisory Database (reviewed) High CVE-2020-7766

Packages

Ecosystem	Package	Affected	Fixed in
npm	json-ptr	< 2.1.0	2.1.0

Details

As written in the advisory (Markdown source, shown as plain text).

npm `json-ptr` before 2.1.0 has an arbitrary code execution vulnerability. The issue occurs in the [set operation](https://flitbit.github.io/json-ptr/classes/_src_pointer_.jsonpointer.htmlset) when the force flag is set to true. The function recursively set the property in the target object, however it does not properly check the key being set, leading to a prototype pollution.

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2020-7766 advisory
https://github.com/418sec/json-ptr/pull/3 web
https://github.com/flitbit/json-ptr/commit/2539e3494c80af1eef24f0f433654a61f255f011 web
https://github.com/flitbit/json-ptr/blob/master/src/util.ts%23L174 web
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1038396 web
https://snyk.io/vuln/SNYK-JS-JSONPTR-1016939 web
https://www.huntr.dev/bounties/2-npm-json-ptr web
https://www.npmjs.com/package/json-ptr web