漏洞类别：Amazon Linux
漏洞等级： 
漏洞信息
It was discovered that the Tomcat packages installed certain configuration files read by the Tomcat initialization script as writeable to the tomcat group. A member of the group or a malicious web application deployed on Tomcat could use this flaw to escalate their privileges. (CVE-2016-6325 )
A malicious web application was able to bypass a configured SecurityManager via a Tomcat utility method that was accessible to web applications. (CVE-2016-5018 )
The Realm implementations did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note that the default configuration includes the LockOutRealm which makes exploitation of this vulnerability harder. (CVE-2016-0762 )
When a SecurityManager is configured, a web application's ability to read system properties should be controlled by the SecurityManager. Tomcat's system property replacement feature for configuration files could be used by a malicious web application to bypass the SecurityManager and read system properties that should not be visible. (CVE-2016-6794 )
A malicious web application was able to bypass a configured SecurityManager via manipulation of the configuration parameters for the JSP Servlet. (CVE-2016-6796 )
The ResourceLinkFactory did not limit web application access to global JNDI resources to those resources explicitly linked to the web application. Therefore, it was possible for a web application to access any global JNDI resource whether an explicit ResourceLink had been configured or not. (CVE-2016-6797 )
漏洞危害
Allows unauthorized disclosure of information; allows unauthorized modification; allows disruption of service.
解决方案
Please refer to Amazon advisory ALAS-2016-764 for affected packages and patching details, or update with your package manager.
Patch:
Following are links for downloading patches to fix the vulnerabilities:
0day
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