Issued:

2016-10-10

Updated:

2016-10-10

RHSA-2016:2046 - Important: tomcat security update

Synopsis

Important: tomcat security update

Type/Severity

Security Advisory Important

Topic

An update for tomcat is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

• It was discovered that the Tomcat packages installed configuration file /usr/lib/tmpfiles.d/tomcat.conf 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-2016-5425)

• 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)

• It was found that the expression language resolver evaluated expressions within a privileged code section. A malicious web application could use this flaw to bypass security manager protections. (CVE-2014-7810)

• It was discovered that tomcat used the value of the Proxy header from HTTP requests to initialize the HTTP_PROXY environment variable for CGI scripts, which in turn was incorrectly used by certain HTTP client implementations to configure the proxy for outgoing HTTP requests. A remote attacker could possibly use this flaw to redirect HTTP requests performed by a CGI script to an attacker-controlled proxy via a malicious HTTP request. (CVE-2016-5388)

• A session fixation flaw was found in the way Tomcat recycled the requestedSessionSSL field. If at least one web application was configured to use the SSL session ID as the HTTP session ID, an attacker could reuse a previously used session ID for further requests. (CVE-2015-5346)

Red Hat would like to thank Dawid Golunski (http://legalhackers.com) for reporting CVE-2016-5425 and Scott Geary (VendHQ) for reporting CVE-2016-5388. The CVE-2016-6325 issue was discovered by Red Hat Product Security.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

Updated Packages

• tomcat-7.0.54-8.el7_2.src.rpm
• tomcat-7.0.54-8.el7_2.noarch.rpm
• tomcat-el-2.2-api-7.0.54-8.el7_2.noarch.rpm
• tomcat-admin-webapps-7.0.54-8.el7_2.noarch.rpm
• tomcat-jsp-2.2-api-7.0.54-8.el7_2.noarch.rpm
• tomcat-webapps-7.0.54-8.el7_2.noarch.rpm
• tomcat-servlet-3.0-api-7.0.54-8.el7_2.noarch.rpm
• tomcat-javadoc-7.0.54-8.el7_2.noarch.rpm
• tomcat-lib-7.0.54-8.el7_2.noarch.rpm
• tomcat-jsvc-7.0.54-8.el7_2.noarch.rpm
• tomcat-docs-webapp-7.0.54-8.el7_2.noarch.rpm

Fixes

• This content is not included.BZ - 1222573
• This content is not included.BZ - 1311085
• This content is not included.BZ - 1353809
• This content is not included.BZ - 1362545
• This content is not included.BZ - 1367447

CVEs

• CVE-2014-7810
• CVE-2015-5346
• CVE-2016-5388
• CVE-2016-5425
• CVE-2016-6325

References

• https://access.redhat.com/security/updates/classification/#important

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.