ESB-2018.0105 - [Ubuntu] libtomcat8-java: Multiple vulnerabilities 2018-01-09

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0105
                          Tomcat vulnerabilities
                              9 January 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           libtomcat8-java
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Provide Misleading Information -- Remote/Unauthenticated
                   Access Confidential Data       -- Remote/Unauthenticated
                   Unauthorised Access            -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-7674 CVE-2017-5664 CVE-2017-5648
                   CVE-2017-5647  

Reference:         ASB-2017.0180
                   ASB-2017.0177
                   ASB-2017.0175
                   ASB-2017.0171
                   ASB-2017.0109
                   ESB-2017.1186
                   ESB-2017.1102
                   ESB-2017.1101

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3519-1

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USN-3519-1: Tomcat vulnerabilities
Ubuntu Security Notice USN-3519-1

8th January, 2018
tomcat7, tomcat8 vulnerabilities

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

    Ubuntu 17.04
    Ubuntu 16.04 LTS
    Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Tomcat.
Software description

    tomcat7 - Servlet and JSP engine
    tomcat8 - Servlet and JSP engine

Details

It was discovered that Tomcat incorrectly handled certain pipelined
requests when sendfile was used. A remote attacker could use this issue to
obtain wrong responses possibly containing sensitive information.
(CVE-2017-5647)

It was discovered that Tomcat incorrectly used the appropriate facade
object. A malicious application could possibly use this to bypass Security
Manager restrictions. (CVE-2017-5648)

It was discovered that Tomcat incorrectly handled error pages. A remote
attacker could possibly use this issue to replace or remove the custom
error page. (CVE-2017-5664)

It was discovered that Tomcat incorrectly handled the CORS filter. A remote
attacker could possibly use this issue to perform cache poisoning.
(CVE-2017-7674)

Update instructions

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

Ubuntu 17.04:
    tomcat8 8.0.38-2ubuntu2.2 
    libtomcat8-java 8.0.38-2ubuntu2.2 
Ubuntu 16.04 LTS:
    tomcat8 8.0.32-1ubuntu1.5 
    libtomcat8-java 8.0.32-1ubuntu1.5 
Ubuntu 14.04 LTS:
    tomcat7 7.0.52-1ubuntu0.13 
    libtomcat7-java 7.0.52-1ubuntu0.13 

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

CVE-2017-5647, CVE-2017-5648, CVE-2017-5664, CVE-2017-7674

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