PT-2021-19289 · Vaadin · Com.Vaadin:Flow-Client

Published 2021-04-22 · Updated 2021-05-04 · CVE-2021-31408

Positive Technologies (AI Summary)

CVSS v3.1

6.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions com.vaadin:flow-client versions 5.0.0 through 6.0.4

Description The Authentication.logout() helper in com.vaadin:flow-client uses an incorrect HTTP method, which, in combination with Spring Security CSRF protection, allows local attackers to access Fusion endpoints after the user attempted to log out.

Recommendations For versions 5.0.0 through 6.0.4, consider disabling the Authentication.logout() helper until a patch is available to prevent local attackers from accessing Fusion endpoints after a user logs out. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Insufficient Session Expiration

Improper Authentication

Weakness Enumeration

CWE-613

CWE-287

Related Identifiers

CVE-2021-31408

GHSA-6HGR-2G6Q-3RMC

GHSA-MR8H-J9CV-4M8H

Affected Products

Com.Vaadin:Flow-Client

References · 12

• https://github.com/vaadin/flow/pull/10577 · Patch
• https://osv.dev/vulnerability/CVE-2021-31408 · Vendor Advisory
• https://vaadin.com/security/cve-2021-31408 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-31408 · Security Note
• https://osv.dev/vulnerability/GHSA-6hgr-2g6q-3rmc · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-mr8h-j9cv-4m8h · Vendor Advisory
• https://github.com/vaadin/flow · Note
• https://github.com/vaadin/flow/commit/815b967fc84fefa8d3a4d72b9a036f48b0d96326 · Note
• https://github.com/vaadin/flow/security/advisories/GHSA-6hgr-2g6q-3rmc · Note
• https://github.com/vaadin/platform/security/advisories/GHSA-mr8h-j9cv-4m8h · Note
• https://t.me/cvenotify/13603 · Telegram Post
• https://t.me/cvenotify/14019 · Telegram Post