Medium: tomcat7

Issue Overview:

ResourceLinkFactory.setGlobalContext() is a public method and was discovered to be accessible by web applications running under a security manager without any checks. This allowed a malicious web application to inject a malicious global context that could in turn be used to disrupt other web applications and/or read and write data owned by other web applications. (CVE-2016-0763)

The Manager and Host Manager applications were discovered to establish sessions and send CSRF tokens for arbitrary new requests, which allows remote attackers to bypass a CSRF protection mechanism by using a token. (CVE-2015-5351)

The Mapper component processes redirects before considering security constraints and Filters, which allows remote attackers to determine the existence of a directory via a URL that lacks a trailing / (slash) character. (CVE-2015-5345)

The session-persistence implementation was discovered to mishandle session attributes, which allows remote authenticated users to bypass intended SecurityManager restrictions and execute arbitrary code in a privileged context via a web application that places a crafted object in a session. (CVE-2016-0714)

It was discovered that org.apache.catalina.manager.StatusManagerServlet was not placed on the org/apache/catalina/core/RestrictedServlets.properties list, which allows remote authenticated users to bypass intended SecurityManager restrictions and read arbitrary HTTP requests, and consequently discover session ID values, via a crafted web application. (CVE-2016-0706)

Affected Packages:

tomcat7

Issue Correction:
Run yum update tomcat7 to update your system.

New Packages:

noarch:  
    tomcat7-servlet-3.0-api-7.0.68-1.15.amzn1.noarch  
    tomcat7-jsp-2.2-api-7.0.68-1.15.amzn1.noarch  
    tomcat7-admin-webapps-7.0.68-1.15.amzn1.noarch  
    tomcat7-lib-7.0.68-1.15.amzn1.noarch  
    tomcat7-docs-webapp-7.0.68-1.15.amzn1.noarch  
    tomcat7-webapps-7.0.68-1.15.amzn1.noarch  
    tomcat7-log4j-7.0.68-1.15.amzn1.noarch  
    tomcat7-7.0.68-1.15.amzn1.noarch  
    tomcat7-javadoc-7.0.68-1.15.amzn1.noarch  
    tomcat7-el-2.2-api-7.0.68-1.15.amzn1.noarch  
  
src:  
    tomcat7-7.0.68-1.15.amzn1.src  

Additional References

Red Hat: CVE-2015-5345, CVE-2015-5351, CVE-2016-0706, CVE-2016-0714, CVE-2016-0763

Mitre: CVE-2015-5345, CVE-2015-5351, CVE-2016-0706, CVE-2016-0714, CVE-2016-0763