CVE-2021-3690: Undertow vulnerable to memory exhaustion due to buffer leak

CVE-2021-3690 · Severity: low · CVSS 3.1 · Published 2022-07-15

Undertow vulnerable to memory exhaustion due to buffer leak

Technologies: io.undertow:undertow-core (Maven). Vendors: Maven.

Quick answers

Is CVE-2021-3690 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-3690 being exploited in the wild.
How severe is CVE-2021-3690?
Low severity, with a CVSS score of 3.1, published 15 July 2022.
Which products and versions are affected?
io.undertow:undertow-core (Maven) ECOSYSTEM:introduced=0,fixed=2.0.40.
Is there a fix for CVE-2021-3690?
Yes. io.undertow:undertow-core (Maven): upgrade to 2.0.40 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-3690?
Check whether you run io.undertow:undertow-core (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

  • io.undertow:undertow-core (Maven): upgrade to 2.0.40 or later
    # set io.undertow:undertow-core to 2.0.40 in your pom.xml or build.gradle

Affected products

  • io.undertow:undertow-core (Maven) ECOSYSTEM:introduced=0,fixed=2.0.40

Identifiers

  • CVE-2021-3690
  • GHSA-fj7c-vg2v-ccrm

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