Executive Summary

Title Tomcat vulnerabilities
Name USN-4251-1 First vendor Publication 2020-01-27
Vendor Ubuntu Last vendor Modification 2020-01-27
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 5.9 Temporal Score 7.5
Exploitabality Sub Score 1.6
Attack Vector Network Attack Complexity High
Privileges Required None User Interaction Required
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:H/Au:N/C:P/I:P/A:P)
Cvss Base Score 5.1 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity High
Cvss Expoit Score 4.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS


Several security issues were fixed in Tomcat.

Software Description: - tomcat8: Servlet and JSP engine


It was discovered that Tomcat incorrectly handled the RMI registry when configured with the JMX Remote Lifecycle Listener. A local attacker could possibly use this issue to obtain credentials and gain complete control over the Tomcat instance. (CVE-2019-12418)

It was discovered that Tomcat incorrectly handled FORM authentication. A remote attacker could possibly use this issue to perform a session fixation attack. (CVE-2019-17563)

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04 LTS:
libtomcat8-java 8.0.32-1ubuntu1.11
tomcat8 8.0.32-1ubuntu1.11

In general, a standard system update will make all the necessary changes.

CVE-2019-12418, CVE-2019-17563

Package Information:

Original Source

Url : http://www.ubuntu.com/usn/USN-4251-1

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-384 Session Fixation

CPE : Common Platform Enumeration

Application 510
Os 1
Os 2
Os 1

Alert History

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Date Informations
2020-05-23 13:03:46
  • Multiple Updates
2020-03-19 13:20:13
  • First insertion