Updated tomcat packages fix security vulnerabilities:

Apache Tomcat 7.x before 7.0.47, when an HTTP connector or AJP
connector is used, does not properly handle certain inconsistent HTTP
request headers, which allows remote attackers to trigger incorrect
identification of a request’s length and conduct request-smuggling
attacks via (1) multiple Content-Length headers or (2) a Content-Length
header and a Transfer-Encoding: chunked header (CVE-2013-4286).

Apache Tomcat 7.x before 7.0.50 processes chunked transfer coding
without properly handling (1) a large total amount of chunked data or
(2) whitespace characters in an HTTP header value within a trailer
field, which allows remote attackers to cause a denial of service by
streaming data (CVE-2013-4322).

Apache Tomcat 7.x before 7.0.50 allows attackers to obtain Tomcat
internals information by leveraging the presence of an untrusted web
application with a context.xml, web.xml, *.jspx, *.tagx, or *.tld XML
document containing an external entity declaration in conjunction
with an entity reference, related to an XML External Entity (XXE)
issue (CVE-2013-4590).

Integer overflow in the parseChunkHeader function in
java/org/apache/coyote/http11/filters/ChunkedInputFilter.java in
Apache Tomcat before 6.0.40 and 7.x before 7.0.53 allows remote
attackers to cause a denial of service (resource consumption) via a
malformed chunk size in chunked transfer coding of a request during
the streaming of data (CVE-2014-0075).

java/org/apache/catalina/servlets/DefaultServlet.java in the default
servlet in Apache Tomcat before 6.0.40 and 7.x before 7.0.53 does not
properly restrict XSLT stylesheets, which allows remote attackers
to bypass security-manager restrictions and read arbitrary files
via a crafted web application that provides an XML external entity
declaration in conjunction with an entity reference, related to an
XML External Entity (XXE) issue (CVE-2014-0096).

Integer overflow in java/org/apache/tomcat/util/buf/Ascii.java in
Apache Tomcat before 6.0.40 and 7.x before 7.0.53, when operated
behind a reverse proxy, allows remote attackers to conduct HTTP
request smuggling attacks via a crafted Content-Length HTTP header
(CVE-2014-0099).

Apache Tomcat before 6.0.40 and 7.x before 7.0.54 does not properly
constrain the class loader that accesses the XML parser used with
an XSLT stylesheet, which allows remote attackers to read arbitrary
files via a crafted web application that provides an XML external
entity declaration in conjunction with an entity reference, related
to an XML External Entity (XXE) issue, or read files associated with
different web applications on a single Tomcat instance via a crafted
web application (CVE-2014-0119).

In Apache Tomcat 7.x before 7.0.55, it was possible to craft a
malformed chunk as part of a chunked request that caused Tomcat to
read part of the request body as a new request (CVE-2014-0227).