PT-2021-9094 · Vaadin · Com.Vaadin:Flow-Server

Tatulund · Published 2021-04-19 · Updated 2021-05-05 · CVE-2019-25027

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions com.vaadin:flow-server versions 1.0.0 through 1.0.10 com.vaadin:flow-server versions 1.1.0 through 1.4.2

Description The issue is related to missing output sanitization in the default RouteNotFoundError view. This allows an attacker to execute malicious JavaScript via a crafted URL.

Recommendations For com.vaadin:flow-server versions 1.0.0 through 1.0.10, update to a version outside of this range to resolve the issue. For com.vaadin:flow-server versions 1.1.0 through 1.4.2, update to a version outside of this range to resolve the issue. As a temporary workaround, consider implementing proper output sanitization for the RouteNotFoundError view to prevent malicious JavaScript execution.

Fix

XSS

Weakness Enumeration

CWE-79

CWE-81

Related Identifiers

CVE-2019-25027

GHSA-JQJ4-R483-4GVR

GHSA-RP4X-WXQV-CF9M

Affected Products

Com.Vaadin:Flow-Server

References · 9

• https://github.com/vaadin/flow/pull/5498 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2019-25027 · Security Note
• https://osv.dev/vulnerability/GHSA-jqj4-r483-4gvr · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-25027 · Vendor Advisory
• https://vaadin.com/security/cve-2019-25027 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-rp4x-wxqv-cf9m · Vendor Advisory
• https://github.com/vaadin/flow/security/advisories/GHSA-rp4x-wxqv-cf9m · Note
• https://github.com/vaadin/platform · Note
• https://github.com/vaadin/platform/security/advisories/GHSA-jqj4-r483-4gvr · Note