Deserialization Code Execution in js-yaml
Versions 2.0.4 and earlier of `js-yaml` are affected by a code execution vulnerability in the YAML deserializer. ## Proof of Concept ``` const yaml = require('js-yaml'); const x = `test: !!js/function > function f() { console.log(1); }();` yaml.load(x); ``` ## Recommendation Update js-yaml to version 2.0.5 or later, and ensure that all instances where the `.load()` method is called are updated to use `.safeLoad()` instead.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2013-4660US | medium6.8 | Exploit | ||
The JS-YAML module before 2.0.5 for Node.js parses input without properly considering the unsafe !!js/function tag, which allows remote attackers to execute arbitrary code via a cr… | ||||
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references
External citations — patches, advisories, analysis.
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