CVE-2023-5562

Unsafe default allows for cross-site scripting attacks in KNIME Server and KNIME Business Hub

Description

An unsafe default configuration in KNIME Analytics Platform before 5.2.0 allows for a cross-site scripting attack. When KNIME Analytics Platform is used as an executor for either KNIME Server or KNIME Business Hub several JavaScript-based view nodes do not sanitize the data that is displayed by default. If the data to be displayed contains JavaScript this code is executed in the browser and can perform any operations that the current user is allowed to perform silently. KNIME Analytics Platform already has configuration options with which sanitization of data can be actived, see https://docs.knime.com/latest/webportal_admin_guide/index.html#html-sanitization-webportal https://docs.knime.com/latest/webportal_admin_guide/index.html#html-sanitization-webportal . However, these are off by default which allows for cross-site scripting attacks. KNIME Analytics Platform 5.2.0 will enable sanitization by default. For all previous releases we recommend users to add the corresponding settings to the executor's knime.ini.

Remediation

Workaround:

  • Sanitization can be enabled for all affected JavaScript-based views by adding -Djs.core.sanitize.clientHTML=true to the executor's knime.ini. See https://docs.knime.com/latest/webportal_admin_guide/index.html#html-sanitization-webportal https://docs.knime.com/latest/webportal_admin_guide/index.html#html-sanitization-webportal for more details.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.13%
Vendor Advisory knime.com
Affected: KNIME KNIME Analytics Platform
Published at:
Updated at:

References

Link Tags
https://www.knime.com/security/advisories#CVE-2023-5562 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-5562?
CVE-2023-5562 has been scored as a medium severity vulnerability.
How to fix CVE-2023-5562?
As a workaround for remediating CVE-2023-5562: Sanitization can be enabled for all affected JavaScript-based views by adding -Djs.core.sanitize.clientHTML=true to the executor's knime.ini. See https://docs.knime.com/latest/webportal_admin_guide/index.html#html-sanitization-webportal https://docs.knime.com/latest/webportal_admin_guide/index.html#html-sanitization-webportal for more details.
Is CVE-2023-5562 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-5562 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-5562?
CVE-2023-5562 affects KNIME KNIME Analytics Platform.
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