CVE-2019-19198

Scoutnet Kalender <= 1.1.0 - Cross-Site Scripting

2019-12-10 00:00

Strategic Overview

Status: Unpatched
Affected Plugin: Scoutnet Kalender
Affected Version: <= 1.1.0
CVSS: 6.4Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2019-19198

View all Scoutnet Kalender vulnerabilities

At a glance

CVE-2019-19198 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Scoutnet Kalender WordPress plugin, affecting versions <= 1.1.0. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). No fixed release has been reported yet; treat installations running this software as exposed. Disclosed December 2019, reported by Simon Moser.

Vulnerability Overview

The Scoutnet Kalender plugin 1.1.0 and before for WordPress allows XSS via 'info' field.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Scoutnet Kalender <= 1.1.0 carries this weakness at info, and reaching it takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. No fixed build of this plugin is recorded for Scoutnet Kalender yet, so installs running <= 1.1.0 stay exposed until the vendor ships one.

Remediation

No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.

How does WordSec protect against this?

The attempt arrives as an ordinary request to Scoutnet Kalender: WordSec's web application firewall inspects request payloads before WordPress loads them. No patched version is recorded yet, which is the case where a filtering layer matters most, because there is nothing to update to.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2019-19198 https://www.wordfence.com/threat-intel/vulnerabilities/id/068cb545-8ced-45a1-a50a-1b6a38e99741 https://nvd.nist.gov/vuln/detail/CVE-2019-19198

CVSS Vector

6.4

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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