Timing side channel vulnerability in UIDL request handler in Vaadin 7 and 8
CVE-2021-31403

4MEDIUM

Key Information:

Vendor

Vaadin

Status
Vaadin
Vaadin-server
Vendor
CVE Published:
23 April 2021

What is CVE-2021-31403?

Non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:vaadin-server versions 7.0.0 through 7.7.23 (Vaadin 7.0.0 through 7.7.23), and 8.0.0 through 8.12.2 (Vaadin 8.0.0 through 8.12.2) allows attacker to guess a security token via timing attack

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Deploy the Patch

Affected Version(s)

Vaadin 7.0.0

vaadin-server 7.0.0

References

https://vaadin.com/security/cve-2021-31403
x_refsource_MISC
https://github.com/vaadin/framework/pull/12190
x_refsource_MISC
https://github.com/vaadin/framework/pull/12188
x_refsource_MISC

CVSS V3.1

Score:
4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was discovered and responsibly reported by Xhelal Likaj.
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