Issued:

2013-03-11

Updated:

2013-03-11

RHSA-2013:0623 - Important: tomcat6 security update

Synopsis

Important: tomcat6 security update

Type/Severity

Security Advisory Important

Topic

Updated tomcat6 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Description

Apache Tomcat is a servlet container.

It was found that when an application used FORM authentication, along with another component that calls request.setUserPrincipal() before the call to FormAuthenticator#authenticate() (such as the Single-Sign-On valve), it was possible to bypass the security constraint checks in the FORM authenticator by appending "/j_security_check" to the end of a URL. A remote attacker with an authenticated session on an affected application could use this flaw to circumvent authorization controls, and thereby access resources not permitted by the roles associated with their authenticated session. (CVE-2012-3546)

A flaw was found in the way Tomcat handled sendfile operations when using the HTTP NIO (Non-Blocking I/O) connector and HTTPS. A remote attacker could use this flaw to cause a denial of service (infinite loop). The HTTP blocking IO (BIO) connector, which is not vulnerable to this issue, is used by default in Red Hat Enterprise Linux 6. (CVE-2012-4534)

Multiple weaknesses were found in the Tomcat DIGEST authentication implementation, effectively reducing the security normally provided by DIGEST authentication. A remote attacker could use these flaws to perform replay attacks in some circumstances. (CVE-2012-5885, CVE-2012-5886, CVE-2012-5887)

Users of Tomcat should upgrade to these updated packages, which correct these issues. Tomcat must be restarted for this update to take effect.

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258

Affected Products

Updated Packages

• tomcat6-lib-6.0.24-52.el6_4.noarch.rpm
• tomcat6-admin-webapps-6.0.24-52.el6_4.noarch.rpm
• tomcat6-javadoc-6.0.24-52.el6_4.noarch.rpm
• tomcat6-jsp-2.1-api-6.0.24-52.el6_4.noarch.rpm
• tomcat6-docs-webapp-6.0.24-52.el6_4.noarch.rpm
• tomcat6-6.0.24-52.el6_4.noarch.rpm
• tomcat6-el-2.1-api-6.0.24-52.el6_4.noarch.rpm
• tomcat6-servlet-2.5-api-6.0.24-52.el6_4.noarch.rpm
• tomcat6-webapps-6.0.24-52.el6_4.noarch.rpm
• tomcat6-6.0.24-52.el6_4.src.rpm

Fixes

• This content is not included.BZ - 873664
• This content is not included.BZ - 883634
• This content is not included.BZ - 883637

CVEs

• CVE-2012-3546
• CVE-2012-5885
• CVE-2012-4534
• CVE-2012-5886
• CVE-2012-5887

References

• https://access.redhat.com/security/updates/classification/#important
• Content from tomcat.apache.org is not included.Content from tomcat.apache.org is not included.http://tomcat.apache.org/security-6.html

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.