GHSA-9prh-257w-9277

Cross-Site Scripting in handlebars

Description

Versions of `handlebars` prior to 4.0.0 are affected by a cross-site scripting vulnerability when attributes in handlebar templates are not quoted. ## Proof of Concept Template: ```<a href={{foo}}/>``` Input: ```{ 'foo' : 'test.com onload=alert(1)'}``` Rendered result: ```<a href=test.com onload=alert(1)/>``` ## Recommendation Update to version 4.0.0 or later. Alternatively, ensure that all attributes in handlebars templates are encapsulated with quotes.

Affected packages

References

• https://nvd.nist.gov/vuln/detail/CVE-2015-8861 ADVISORY
• https://github.com/wycats/handlebars.js/pull/1083 WEB
• https://blog.srcclr.com/handlebars_vulnerability_research_findings WEB
• https://github.com/advisories/GHSA-9prh-257w-9277 ADVISORY
• https://github.com/wycats/handlebars.js PACKAGE
• https://www.npmjs.com/advisories/61 WEB
• https://www.sourceclear.com/blog/handlebars_vulnerability_research_findings WEB
• https://www.tenable.com/security/tns-2016-18 WEB
• http://www.openwall.com/lists/oss-security/2016/04/20/11 WEB
• http://www.securityfocus.com/bid/96434 WEB

Sources