RHEL 5 / 6 : JBoss Web Server (RHSA-2013:0266)

This script is Copyright (C) 2014 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

Updated tomcat6 packages that fix multiple security issues are now
available for JBoss Enterprise Web Server 2.0.0 for Red Hat Enterprise
Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having
moderate 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.

Apache Tomcat is a servlet container.

It was found that sending a request without a session identifier to a
protected resource could bypass the Cross-Site Request Forgery (CSRF)
prevention filter. A remote attacker could use this flaw to perform
CSRF attacks against applications that rely on the CSRF prevention
filter and do not contain internal mitigation for CSRF.
(CVE-2012-4431)

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 NIO connector is used by default in JBoss Enterprise
Web Server. The Apache Portable Runtime (APR) connector from the
Tomcat Native library was not affected by this flaw. (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)

A denial of service flaw was found in the way the Tomcat HTTP NIO
connector enforced limits on the permitted size of request headers. A
remote attacker could use this flaw to trigger an OutOfMemoryError by
sending a specially crafted request with very large headers. The HTTP
NIO connector is used by default in JBoss Enterprise Web Server. The
APR connector from the Tomcat Native library was not affected by this
flaw. (CVE-2012-2733)

Warning: Before applying the update, back up your existing JBoss
Enterprise Web Server installation (including all applications and
configuration files).

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

See also :

https://www.redhat.com/security/data/cve/CVE-2012-2733.html
https://www.redhat.com/security/data/cve/CVE-2012-4431.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
http://tomcat.apache.org/security-6.html
http://rhn.redhat.com/errata/RHSA-2013-0266.html

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 4.3
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 76234 ()

Bugtraq ID: 56402
56403
56813
56814

CVE ID: CVE-2012-2733
CVE-2012-4431
CVE-2012-4534
CVE-2012-5885
CVE-2012-5886
CVE-2012-5887