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