SB2021082203 - Denial of service in Undertow
Published: August 22, 2021
Security Bulletin ID
SB2021082203
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2021-3690)
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 update from vendor's website.