Red Hat: 2013:0623-01: tomcat6: Important Advisory
Summary
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.
Summary
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
References
https://www.redhat.com/security/data/cve/CVE-2012-3546.html https://www.redhat.com/security/data/cve/CVE-2012-4534.html https://www.redhat.com/security/data/cve/CVE-2012-5885.html https://www.redhat.com/security/data/cve/CVE-2012-5886.html https://www.redhat.com/security/data/cve/CVE-2012-5887.html https://access.redhat.com/security/updates/classification/#important https://tomcat.apache.org/security-6.html
Package List
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
noarch:
tomcat6-6.0.24-52.el6_4.noarch.rpm
tomcat6-admin-webapps-6.0.24-52.el6_4.noarch.rpm
tomcat6-docs-webapp-6.0.24-52.el6_4.noarch.rpm
tomcat6-el-2.1-api-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-lib-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
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
noarch:
tomcat6-6.0.24-52.el6_4.noarch.rpm
tomcat6-admin-webapps-6.0.24-52.el6_4.noarch.rpm
tomcat6-docs-webapp-6.0.24-52.el6_4.noarch.rpm
tomcat6-el-2.1-api-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-lib-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
Red Hat Enterprise Linux Server (v. 6):
Source:
noarch:
tomcat6-6.0.24-52.el6_4.noarch.rpm
tomcat6-el-2.1-api-6.0.24-52.el6_4.noarch.rpm
tomcat6-jsp-2.1-api-6.0.24-52.el6_4.noarch.rpm
tomcat6-lib-6.0.24-52.el6_4.noarch.rpm
tomcat6-servlet-2.5-api-6.0.24-52.el6_4.noarch.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
noarch:
tomcat6-admin-webapps-6.0.24-52.el6_4.noarch.rpm
tomcat6-docs-webapp-6.0.24-52.el6_4.noarch.rpm
tomcat6-javadoc-6.0.24-52.el6_4.noarch.rpm
tomcat6-webapps-6.0.24-52.el6_4.noarch.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
noarch:
tomcat6-6.0.24-52.el6_4.noarch.rpm
tomcat6-el-2.1-api-6.0.24-52.el6_4.noarch.rpm
tomcat6-jsp-2.1-api-6.0.24-52.el6_4.noarch.rpm
tomcat6-lib-6.0.24-52.el6_4.noarch.rpm
tomcat6-servlet-2.5-api-6.0.24-52.el6_4.noarch.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
Source:
noarch:
tomcat6-admin-webapps-6.0.24-52.el6_4.noarch.rpm
tomcat6-docs-webapp-6.0.24-52.el6_4.noarch.rpm
tomcat6-javadoc-6.0.24-52.el6_4.noarch.rpm
tomcat6-webapps-6.0.24-52.el6_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/#package
Topic
Updated tomcat6 packages that fix multiple security issues are nowavailable for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as havingimportant security impact. Common Vulnerability Scoring System (CVSS) basescores, which give detailed severity ratings, are available for eachvulnerability from the CVE links in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Desktop Optional (v. 6) - noarch
Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch
Red Hat Enterprise Linux Server (v. 6) - noarch
Red Hat Enterprise Linux Server Optional (v. 6) - noarch
Red Hat Enterprise Linux Workstation (v. 6) - noarch
Red Hat Enterprise Linux Workstation Optional (v. 6) - noarch
Bugs Fixed
873664 - CVE-2012-5885 CVE-2012-5886 CVE-2012-5887 tomcat: three DIGEST authentication implementation issues
883634 - CVE-2012-3546 Tomcat/JBoss Web: Bypass of security constraints
883637 - CVE-2012-4534 Tomcat - Denial Of Service when using NIO+SSL+sendfile