Apache Tomcat 8.5.x < 8.5.41 DoS Vulnerability

medium Nessus Network Monitor Plugin ID 700697
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Synopsis

The remote Apache Tomcat server is affected by a vulnerability.

Description

The version of Tomcat installed on the remote host is prior to 8.5.41. It is, therefore, affected by a vulnerability as referenced in the fixed_in_apache_tomcat_8.5.41_security-8 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 Network Monitor 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 8.5.41 or later.

See Also

http://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.38

http://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.41

Plugin Details

Severity: Medium

ID: 700697

Family: Web Servers

Published: 5/13/2019

Updated: 5/13/2019

Risk Information

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*

Patch Publication Date: 3/25/2019

Vulnerability Publication Date: 4/10/2019

Reference Information

CVE: CVE-2019-0199

BID: 107674

IAVB: 2019-B-0051