#VU56025 Memory leak in Undertow - CVE-2021-3690

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Main Vulnerability Database Vulnerabilities #VU56025

#VU56025 Memory leak in Undertow - CVE-2021-3690

Published: August 22, 2021


Vulnerability identifier: #VU56025
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-3690
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Undertow
Software vendor:
Red Hat Inc.

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak when processing incoming PONG messages. A remote attacker can force the application to leak memory by sending an websocket PONG message and perform denial of service attack.


Remediation

Install updates from vendor's website.

External links