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

CVE-2021-31403 · Severity: low · CVSS 3.1 · Published 2021-04-19

Timing side channel vulnerability in UIDL request handler in Vaadin 7 and 8

Technologies: com.vaadin:vaadin-bom (Maven), com.vaadin:vaadin-server (Maven). Vendors: Maven.

Quick answers

Is CVE-2021-31403 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-31403 being exploited in the wild.
How severe is CVE-2021-31403?
Low severity, with a CVSS score of 3.1, published 19 April 2021.
Which products and versions are affected?
com.vaadin:vaadin-bom (Maven) ECOSYSTEM:introduced=7.0.0,fixed=7.7.24; com.vaadin:vaadin-server (Maven) ECOSYSTEM:introduced=7.0.0,fixed=7.7.24.
Is there a fix for CVE-2021-31403?
Yes. com.vaadin:vaadin-bom (Maven): upgrade to 7.7.24 or later; com.vaadin:vaadin-server (Maven): upgrade to 7.7.24 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-31403?
Check whether you run com.vaadin:vaadin-bom (Maven) or com.vaadin:vaadin-server (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • com.vaadin:vaadin-bom (Maven): upgrade to 7.7.24 or later
    # set com.vaadin:vaadin-bom to 7.7.24 in your pom.xml or build.gradle
  • com.vaadin:vaadin-server (Maven): upgrade to 7.7.24 or later
    # set com.vaadin:vaadin-server to 7.7.24 in your pom.xml or build.gradle

Affected products

  • com.vaadin:vaadin-bom (Maven) ECOSYSTEM:introduced=7.0.0,fixed=7.7.24
  • com.vaadin:vaadin-server (Maven) ECOSYSTEM:introduced=7.0.0,fixed=7.7.24

Identifiers

  • CVE-2021-31403
  • GHSA-75xc-qvxh-27f8

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