Is CVE-2017-15878 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2017-15878 being exploited in the wild.

How severe is CVE-2017-15878?

Low severity, with a CVSS score of 3, published 15 November 2017.

Which products and versions are affected?

keystone (npm) SEMVER:introduced=0,fixed=4.0.0.

Is there a fix for CVE-2017-15878?

Yes. keystone (npm): upgrade to 4.0.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2017-15878 attacked?

It is attacked over the network.

Am I affected by CVE-2017-15878?

Check whether you run keystone (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2017-15878: KeystoneJS Cross-Site Scripting in contact form

CVE-2017-15878 · Severity: low · CVSS 3 · Published 2017-11-15

KeystoneJS is a Node.js content management system and headless CMS platform. A flaw in the "Contact Us" page allows attackers to inject malicious JavaScript into contact form messages. When an administrator opens the inquiry in their browser, the attacker's script executes with the admin's privileges, potentially compromising account security or enabling unauthorized administrative actions.

Technologies: keystone (npm). Vendors: npm.

Quick answers

Is CVE-2017-15878 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2017-15878 being exploited in the wild.
How severe is CVE-2017-15878?: Low severity, with a CVSS score of 3, published 15 November 2017.
Which products and versions are affected?: keystone (npm) SEMVER:introduced=0,fixed=4.0.0.
Is there a fix for CVE-2017-15878?: Yes. keystone (npm): upgrade to 4.0.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2017-15878 attacked?: It is attacked over the network.
Am I affected by CVE-2017-15878?: Check whether you run keystone (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

keystone (npm): upgrade to 4.0.0 or later
```
npm install keystone@4.0.0
```

Technical details

The vulnerability is a stored Cross-Site Scripting (XSS) flaw (CWE-79) in KeystoneJS versions prior to 4.0.0. The Contact Us form fails to sanitize user input in the message field, and admin-facing output is not properly HTML-encoded. An unauthenticated attacker can submit a contact form with arbitrary JavaScript, which is stored and later executed when an administrator opens the inquiry in their browser. This requires user interaction (admin viewing the message) and affects the confidentiality and integrity of the application. The vulnerability was fixed in version 4.0.0.

Affected products

KeystoneJS keystone prior to 4.0.0

Identifiers

CVE-2017-15878
GHSA-7qcx-jmrc-h2rr

Timeline

2017-11-15: disclosed
2017: patched: Fixed in version 4.0.0

References

https://github.com/keystonejs/keystone/pull/4478

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