SB2021111607 - Denial of service in Undertow
Published: November 16, 2021 Updated: October 5, 2022
Security Bulletin ID
SB2021111607
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) Resource exhaustion (CVE-ID: CVE-2021-3629)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to Undertow does not properly control consumption of internal resources when processing HTTP/2 requests. A remote attacker can send specially crafted HTTP/2 requests to the web server, trigger resource exhaustion and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.