PT-2021-20228 · Vaadin · Vaadin+1

Pleku · Published 2021-06-24 · Updated 2021-07-01 · CVE-2021-33604

Positive Technologies (AI Summary)

CVSS v3.1

2.5

Low

Base vector

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

Name of the Vulnerable Software and Affected Versions com.vaadin:flow-server versions 2.0.0 through 2.6.1 com.vaadin:flow-server versions 3.0.0 through 6.0.9

Description A URL encoding error in the development mode handler allows a local user to execute arbitrary JavaScript code by opening a crafted URL in a browser. This issue affects Vaadin versions 14.0.0 through 14.6.1 and 15.0.0 through 19.0.8.

Recommendations For com.vaadin:flow-server versions 2.0.0 through 2.6.1, update to a version outside of this range to resolve the issue. For com.vaadin:flow-server versions 3.0.0 through 6.0.9, update to a version outside of this range to resolve the issue. As a temporary workaround, consider disabling the development mode handler until a patch is available.

Fix

Weakness Enumeration

CWE-172

Related Identifiers

CVE-2021-33604

GHSA-8VFW-V2JV-9HWC

GHSA-C99R-67X4-WHJ6

Affected Products

Vaadin

Com.Vaadin:Flow-Server

References · 9

• https://github.com/vaadin/flow/pull/11099 · Patch
• https://osv.dev/vulnerability/CVE-2021-33604 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-33604 · Security Note
• https://vaadin.com/security/cve-2021-33604 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-c99r-67x4-whj6 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-8vfw-v2jv-9hwc · Vendor Advisory
• https://github.com/vaadin/flow · Note
• https://github.com/vaadin/flow/security/advisories/GHSA-8vfw-v2jv-9hwc · Note
• https://github.com/vaadin/platform/security/advisories/GHSA-c99r-67x4-whj6 · Note