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  5. CVE-2021-3690

CVE-2021-3690: Uncontrolled Resource Consumption

August 23, 2022 (updated July 7, 2023)

A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw allows an attacker to cause a denial of service. The highest threat from this vulnerability is availability.

References

  • access.redhat.com/security/cve/CVE-2021-3690
  • access.redhat.com/security/cve/cve-2021-3690
  • bugzilla.redhat.com/show_bug.cgi?id=1991299
  • github.com/advisories/GHSA-fj7c-vg2v-ccrm
  • github.com/undertow-io/undertow/commit/c7e84a0b7efced38506d7d1dfea5902366973877
  • issues.redhat.com/browse/UNDERTOW-1935
  • nvd.nist.gov/vuln/detail/CVE-2021-3690
  • www.mend.io/vulnerability-database/CVE-2021-3690

Code Behaviors & Features

Detect and mitigate CVE-2021-3690 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →

Affected versions

All versions before 2.0.40, all versions starting from 2.1.0 before 2.2.10

Fixed versions

  • 2.0.40.Final
  • 2.2.10.Final

Solution

Upgrade to versions 2.0.40.Final, 2.2.10.Final or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-401: Missing Release of Memory after Effective Lifetime

Source file

maven/io.undertow/undertow-core/CVE-2021-3690.yml

Spotted a mistake? Edit the file on GitLab.

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