Apache Tomcat 9.0.0.M1 < 9.0.20 DoS

high Nessus Plugin ID 126245

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Synopsis

The remote Apache Tomcat server is affected by a denial of service vulnerability

Description

The version of Tomcat installed on the remote host is prior to 9.0.20. It is, therefore, affected by a vulnerability as referenced in the fixed_in_apache_tomcat_9.0.20_security-9 advisory.

- The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write. By not sending WINDOW_UPDATE messages for the connection window (stream 0) clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS. (CVE-2019-10072)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Apache Tomcat version 9.0.20 or later.

Plugin Details

Severity: High

ID: 126245

File Name: tomcat_9_0_20.nasl

Version: 1.9

Type: combined

Agent: windows, macosx, unix

Family: Web Servers

Published: 6/25/2019

Updated: 4/11/2022

Configuration: Enable thorough checks

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.1

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2019-0199

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:apache:tomcat

Required KB Items: installed_sw/Apache Tomcat

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 4/10/2019

Reference Information

CVE: CVE-2019-0199, CVE-2019-10072

Detections

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