Server session is not invalidated when logout() helper method of Authentication module is used in Vaadin 18-19
CVE-2021-31409

7.5HIGH

Key Information:

Vendor

Vaadin

Status
Vaadin
Vaadin-compatibility-server
Vendor
CVE Published:
6 May 2021

What is CVE-2021-31409?

Unsafe validation RegEx in EmailValidator component in com.vaadin:vaadin-compatibility-server versions 8.0.0 through 8.12.4 (Vaadin versions 8.0.0 through 8.12.4) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.

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Deploy the Patch

Affected Version(s)

Vaadin 8.0.0

vaadin-compatibility-server 8.0.0

References

https://vaadin.com/security/cve-2021-31409
x_refsource_CONFIRM
https://github.com/vaadin/framework/issues/12240
x_refsource_CONFIRM
https://github.com/vaadin/framework/pull/12241
x_refsource_CONFIRM

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was discovered and responsibly reported by Stefan Penndorf.
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