USN-3519-1: Tomcat vulnerabilities

Releases

• Ubuntu 17.04
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• 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 versions:

Ubuntu 17.04

• libtomcat8-java - 8.0.38-2ubuntu2.2
• tomcat8 - 8.0.38-2ubuntu2.2

Ubuntu 16.04

• libtomcat8-java - 8.0.32-1ubuntu1.5
• tomcat8 - 8.0.32-1ubuntu1.5

Ubuntu 14.04

• libtomcat7-java - 7.0.52-1ubuntu0.13
• tomcat7 - 7.0.52-1ubuntu0.13

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