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 Moderate. 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):

• tomcat: Incorrect handling of empty string URL in security constraints can lead to unintended exposure of resources (CVE-2018-1304)
• tomcat: Late application of security constraints can lead to resource exposure for unauthorised users (CVE-2018-1305)
• tomcat: Insecure defaults in CORS filter enable 'supportsCredentials' for all origins (CVE-2018-8014)
• tomcat: Host name verification missing in WebSocket client (CVE-2018-8034)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

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

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

• BZ - 1472950 - shutdown_wait option is not working for Tomcat
• BZ - 1548282 - CVE-2018-1305 tomcat: Late application of security constraints can lead to resource exposure for unauthorised users
• BZ - 1548289 - CVE-2018-1304 tomcat: Incorrect handling of empty string URL in security constraints can lead to unintended exposure of resources
• BZ - 1579611 - CVE-2018-8014 tomcat: Insecure defaults in CORS filter enable 'supportsCredentials' for all origins
• BZ - 1588703 - Backport of Negative maxCookieCount value causes exception for Tomcat
• BZ - 1607580 - CVE-2018-8034 tomcat: Host name verification missing in WebSocket client

CVEs

• CVE-2018-1304
• CVE-2018-1305
• CVE-2018-8014
• CVE-2018-8034

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.7_release_notes/index