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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: tomcat security update
Advisory ID:       RHSA-2017:3081-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2017:3081
Issue date:        2017-10-29
CVE Names:         CVE-2017-12615 CVE-2017-12617 CVE-2017-5647 
                   CVE-2017-7674 
=====================================================================

1. Summary:

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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - noarch
Red Hat Enterprise Linux Client Optional (v. 7) - noarch
Red Hat Enterprise Linux ComputeNode (v. 7) - noarch
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch
Red Hat Enterprise Linux Server (v. 7) - noarch
Red Hat Enterprise Linux Server Optional (v. 7) - noarch
Red Hat Enterprise Linux Workstation (v. 7) - noarch
Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch

3. Description:

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

Security Fix(es):

* A vulnerability was discovered in Tomcat's handling of pipelined requests
when "Sendfile" was used. If sendfile processing completed quickly, it was
possible for the Processor to be added to the processor cache twice. This
could lead to invalid responses or information disclosure. (CVE-2017-5647)

* Two vulnerabilities were discovered in Tomcat where if a servlet context
was configured with readonly=false and HTTP PUT requests were allowed, an
attacker could upload a JSP file to that context and achieve code
execution. (CVE-2017-12615, CVE-2017-12617)

* A vulnerability was discovered in Tomcat where the CORS Filter did not
send a "Vary: Origin" HTTP header. This potentially allowed sensitive data
to be leaked to other visitors through both client-side and server-side
caches. (CVE-2017-7674)

4. 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

5. Bugs fixed (https://bugzilla.redhat.com/):

1441205 - CVE-2017-5647 tomcat: Incorrect handling of pipelined requests when send file was used
1480618 - CVE-2017-7674 tomcat: Vary header not added by CORS filter leading to cache poisoning
1493220 - CVE-2017-12615 tomcat: Remote Code Execution via JSP Upload
1494283 - CVE-2017-12617 tomcat: Remote Code Execution bypass for CVE-2017-12615

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
tomcat-7.0.76-3.el7_4.src.rpm

noarch:
tomcat-servlet-3.0-api-7.0.76-3.el7_4.noarch.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

noarch:
tomcat-7.0.76-3.el7_4.noarch.rpm
tomcat-admin-webapps-7.0.76-3.el7_4.noarch.rpm
tomcat-docs-webapp-7.0.76-3.el7_4.noarch.rpm
tomcat-el-2.2-api-7.0.76-3.el7_4.noarch.rpm
tomcat-javadoc-7.0.76-3.el7_4.noarch.rpm
tomcat-jsp-2.2-api-7.0.76-3.el7_4.noarch.rpm
tomcat-jsvc-7.0.76-3.el7_4.noarch.rpm
tomcat-lib-7.0.76-3.el7_4.noarch.rpm
tomcat-webapps-7.0.76-3.el7_4.noarch.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
tomcat-7.0.76-3.el7_4.src.rpm

noarch:
tomcat-servlet-3.0-api-7.0.76-3.el7_4.noarch.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

noarch:
tomcat-7.0.76-3.el7_4.noarch.rpm
tomcat-admin-webapps-7.0.76-3.el7_4.noarch.rpm
tomcat-docs-webapp-7.0.76-3.el7_4.noarch.rpm
tomcat-el-2.2-api-7.0.76-3.el7_4.noarch.rpm
tomcat-javadoc-7.0.76-3.el7_4.noarch.rpm
tomcat-jsp-2.2-api-7.0.76-3.el7_4.noarch.rpm
tomcat-jsvc-7.0.76-3.el7_4.noarch.rpm
tomcat-lib-7.0.76-3.el7_4.noarch.rpm
tomcat-webapps-7.0.76-3.el7_4.noarch.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
tomcat-7.0.76-3.el7_4.src.rpm

noarch:
tomcat-7.0.76-3.el7_4.noarch.rpm
tomcat-admin-webapps-7.0.76-3.el7_4.noarch.rpm
tomcat-el-2.2-api-7.0.76-3.el7_4.noarch.rpm
tomcat-jsp-2.2-api-7.0.76-3.el7_4.noarch.rpm
tomcat-lib-7.0.76-3.el7_4.noarch.rpm
tomcat-servlet-3.0-api-7.0.76-3.el7_4.noarch.rpm
tomcat-webapps-7.0.76-3.el7_4.noarch.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

noarch:
tomcat-7.0.76-3.el7_4.noarch.rpm
tomcat-admin-webapps-7.0.76-3.el7_4.noarch.rpm
tomcat-docs-webapp-7.0.76-3.el7_4.noarch.rpm
tomcat-el-2.2-api-7.0.76-3.el7_4.noarch.rpm
tomcat-javadoc-7.0.76-3.el7_4.noarch.rpm
tomcat-jsp-2.2-api-7.0.76-3.el7_4.noarch.rpm
tomcat-jsvc-7.0.76-3.el7_4.noarch.rpm
tomcat-lib-7.0.76-3.el7_4.noarch.rpm
tomcat-webapps-7.0.76-3.el7_4.noarch.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
tomcat-7.0.76-3.el7_4.src.rpm

noarch:
tomcat-7.0.76-3.el7_4.noarch.rpm
tomcat-admin-webapps-7.0.76-3.el7_4.noarch.rpm
tomcat-el-2.2-api-7.0.76-3.el7_4.noarch.rpm
tomcat-jsp-2.2-api-7.0.76-3.el7_4.noarch.rpm
tomcat-lib-7.0.76-3.el7_4.noarch.rpm
tomcat-servlet-3.0-api-7.0.76-3.el7_4.noarch.rpm
tomcat-webapps-7.0.76-3.el7_4.noarch.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

noarch:
tomcat-docs-webapp-7.0.76-3.el7_4.noarch.rpm
tomcat-javadoc-7.0.76-3.el7_4.noarch.rpm
tomcat-jsvc-7.0.76-3.el7_4.noarch.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2017-12615
https://access.redhat.com/security/cve/CVE-2017-12617
https://access.redhat.com/security/cve/CVE-2017-5647
https://access.redhat.com/security/cve/CVE-2017-7674
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2017 Red Hat, Inc.
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