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Vulnerability of Jakarta Tag Library: external XML entity injection

Synthesis of the vulnerability

An attacker can transmit malicious XML data to Jakarta Tag Library, in order to read a file, scan sites, or trigger a denial of service.
Severity of this announce: 2/4.
Creation date: 31/08/2015.
Références of this computer vulnerability: 1978495, 1989475, 1995377, 7014463, CVE-2015-0254, openSUSE-SU-2015:1751-1, RHSA-2015:1695-01, RHSA-2016:0121-01, RHSA-2016:0122-01, RHSA-2016:0123-01, RHSA-2016:0124-01, RHSA-2016:0125-01, RHSA-2016:1838-01, RHSA-2016:1839-01, RHSA-2016:1840-01, RHSA-2016:1841-01, SUSE-SU-2017:1568-1, SUSE-SU-2017:1701-1, USN-2551-1, VIGILANCE-VUL-17779.

Description of the vulnerability

XML data can contain external entities (DTD):
  <!ENTITY name SYSTEM "file">
  <!ENTITY name SYSTEM "http://server/file">
A program which reads these XML data can replace these entities by data coming from the indicated file. When the program uses XML data coming from an untrusted source, this behavior leads to:
 - content disclosure from files of the server
 - private web site scan
 - a denial of service by opening a blocking file
This feature must be disabled to process XML data coming from an untrusted source.

However, the Jakarta Tag Library parser allows external entities.

An attacker can therefore transmit malicious XML data to Jakarta Tag Library, in order to read a file, scan sites, or trigger a denial of service.
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This computer weakness alert impacts software or systems such as Notes, Tivoli Workload Scheduler, WebSphere AS Traditional, openSUSE, RHEL, JBoss EAP by Red Hat, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this weakness note is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this weakness bulletin.

Solutions for this threat

IBM Lotus Notes: patch for Jakarta Tag Library.
A patch is available:
  Notes 9.0.1 Fix Pack 7 IF2, 9.0.1 Mac 64-bit IF7: http://www-01.ibm.com/support/docview.wss?uid=swg21657963
  Notes 8.5.3 Fix Pack 6 IF13: http://www-01.ibm.com/support/docview.wss?uid=swg21663874

IBM Tivoli Workload Scheduler: solution for WebSphere AS.
The solution is indicated in information sources.

IBM WebSphere Application Server: solution for Jakarta Tag Library.
Fixed versions are indicated in information sources for the branches 7.0.x, 8.0.x and 8.5.x.

IBM WebSphere Application Server: version 7.0.0.43.
The version 7.0.0.43 is fixed.

JBoss Enterprise Application Platform: version 7.0.2.
The version 7.0.2 is fixed:
  https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=appplatform&downloadType=securityPatches&version=7.0
  RHEL 6: eap7-jboss-ec2-eap 7.0.2-2.GA_redhat_1.ep7.el6, eap7-wildfly 7.0.2-2.GA_redhat_1.1.ep7.el6
  RHEL 7: eap7-jboss-ec2-eap 7.0.2-2.GA_redhat_1.ep7.el7, eap7-wildfly 7.0.2-2.GA_redhat_1.1.ep7.el7

openSUSE: new jakarta-taglibs-standard packages.
New packages are available:
  openSUSE 13.1: jakarta-taglibs-standard 1.1.1-252.3.1
  openSUSE 13.2: jakarta-taglibs-standard 1.1.1-255.3.1

Red Hat JBoss Enterprise Application Platform: new jboss-ec2-eap packages.
New packages are available:
  RHEL 6: jboss-ec2-eap 7.5.6-1.Final_redhat_1.ep6.el6

Red Hat JBoss Enterprise Application Platform: new packages.
New packages are available, as indicated in information sources.
  https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=appplatform&downloadType=securityPatches&version=6.4

RHEL: new jakarta-taglibs-standard packages.
New packages are available:
  RHEL 6: jakarta-taglibs-standard 1.1.1-11.7.el6_7
  RHEL 7: jakarta-taglibs-standard 1.1.2-14.el7_1

SUSE LE: new jakarta-taglibs-standard packages.
New packages are available:
  SUSE LE 11 SP4: jakarta-taglibs-standard 1.1.1-234.31.1
  SUSE LE 12 SP2: jakarta-taglibs-standard 1.1.1-255.2

Ubuntu: new libjakarta-taglibs-standard-java packages.
New packages are available:
  Ubuntu 14.10: libjakarta-taglibs-standard-java 1.1.2-2ubuntu1.14.10.1, libjstl1.1-java 1.1.2-2ubuntu1.14.10.1
  Ubuntu 14.04 LTS: libjakarta-taglibs-standard-java 1.1.2-2ubuntu1.14.04.1, libjstl1.1-java 1.1.2-2ubuntu1.14.04.1
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