MEDIUM4.8

GHSA-7cv6-gvx3-m54m

Cross-Site Scripting in keystone

Quick fix

GHSA-7cv6-gvx3-m54m — keystone: upgrade to the fixed version with the command below.

npm install keystone@4.0.0-beta7

Details

Versions of `keystone` prior to 4.0.0 are vulnerable to Cross-Site Scripting (XSS). The package fails to properly encode rendered HTML on admin-created blog posts. This allows attackers to execute arbitrary JavaScript in the victim's browser. Exploiting this vulnerability requires having access to an admin account.

## Recommendation

Update to version 4.0.0 or later.

Are you affected?

Enter the version of the package you're using.

Affected packages

npm/keystone

Introduced in: 0Fixed in: 4.0.0-beta7

Fixnpm install keystone@4.0.0-beta7

References

https://nvd.nist.gov/vuln/detail/CVE-2017-15881[ADVISORY]
https://github.com/keystonejs/keystone/issues/4437[WEB]
https://github.com/keystonejs/keystone/pull/4478[WEB]
https://github.com/advisories/GHSA-7cv6-gvx3-m54m[ADVISORY]
https://securelayer7.net/download/pdf/KeystoneJS-Pentest-Report-SecureLayer7.pdf[WEB]
https://www.npmjs.com/advisories/981[WEB]
http://blog.securelayer7.net/keystonejs-open-source-penetration-testing-report[WEB]
http://www.securityfocus.com/bid/101541[WEB]