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CVE-2021-3690 Details
Description
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.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2021-3690 | CVE | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1991299 | CVE | Issue TrackingVendor Advisory |
| https://github.com/undertow-io/undertow/commit/c7e84a0b7efced38506d7d1dfea5902366973877 | CVE | PatchThird Party Advisory |
| https://issues.redhat.com/browse/UNDERTOW-1935 | CVE | ExploitIssue TrackingMitigationVendor Advisory |
| https://access.redhat.com/security/cve/CVE-2021-3690 | [email protected] | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1991299 | [email protected] | Issue TrackingVendor Advisory |
| https://github.com/undertow-io/undertow/commit/c7e84a0b7efced38506d7d1dfea5902366973877 | [email protected] | PatchThird Party Advisory |
| https://issues.redhat.com/browse/UNDERTOW-1935 | [email protected] | ExploitIssue TrackingMitigationVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-401 | Missing Release of Memory after Effective Lifetime | [email protected] |
| CWE-400 | Uncontrolled Resource Consumption | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| redhat fuse | 1.0 |
CPE
Remediation
| |
| redhat integration camel k | All versions |
CPE
Remediation
| |
| redhat integration camel quarkus | All versions |
CPE
Remediation
| |
| redhat jboss enterprise application platform | 7.3 7.4 |
CPE
Remediation
| |
| redhat openshift application runtimes | All versions |
CPE
Remediation
| |
| redhat single sign-on | All versions |
CPE
Remediation
| |
| redhat undertow | < 2.0.40 >= 2.1.0, < 2.2.10 |
CPE
Remediation
| |
| redhat enterprise linux | 6.0 7.0 8.0 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| Jul 7, 2023 | Reanalysis | [email protected] |
| Aug 27, 2022 | Initial Analysis | [email protected] |