Vulnerability DatabaseCVE-2021-3690
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CVE-2021-3690
August 23, 2022
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.
Related Resources (8)
https://access.redhat.com/security/cve/cve-2021-3690#cve-cvss-v3
https://github.com/undertow-io/undertow/commit/c7e84a0b7efced38506d7d1dfea5902366973877
https://issues.redhat.com/browse/UNDERTOW-1935
https://www.mend.io/vulnerability-database/CVE-2021-3690
https://bugzilla.redhat.com/show_bug.cgi?id=1991299
https://nvd.nist.gov/vuln/detail/CVE-2021-3690
https://access.redhat.com/security/cve/CVE-2021-3690
https://github.com/undertow-io/undertow
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Missing Release of Memory after Effective Lifetime
CWE-401
Uncontrolled Resource Consumption
CWE-400
EPSS
Base Score:
0.3