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AUSCERT External Security Bulletin Redistribution
ESB-2016.3013
Security Bulletin: OpenSSL vulnerabilities affect IBM
Rational Team Concert (CVE-2016-1240, CVE-2016-6797, etc)
19 December 2016
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Rational Collaborative Lifecycle Management
Publisher: IBM
Operating System: AIX
IBM i
Linux variants
OS X
Solaris
Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Root Compromise -- Existing Account
Denial of Service -- Remote/Unauthenticated
Provide Misleading Information -- Remote with User Interaction
Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-8735 CVE-2016-6817 CVE-2016-6816
CVE-2016-6797 CVE-2016-6796 CVE-2016-6794
CVE-2016-6325 CVE-2016-6306 CVE-2016-6304
CVE-2016-6303 CVE-2016-6302 CVE-2016-5425
CVE-2016-5018 CVE-2016-2183 CVE-2016-2182
CVE-2016-2181 CVE-2016-2180 CVE-2016-2178
CVE-2016-2177 CVE-2016-1240 CVE-2016-0762
Reference: ESB-2016.2904
ESB-2016.2777
ESB-2016.2722
ESB-2016.2509
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=swg21996169
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Security Bulletin: OpenSSL vulnerabilities affect IBM Rational Team Concert
(CVE-2016-1240, CVE-2016-6797, etc)
Security Bulletin
Document information
More support for:
Rational Team Concert
General Information
Software version:
4.0, 4.0.0.1, 4.0.0.2, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6, 4.0.7, 5.0,
5.0.1, 5.0.2, 6.0, 6.0.1, 6.0.2, 6.0.3
Operating system(s):
AIX, IBM i, Linux, OS X, Solaris, Windows
Reference #:
1996169
Modified date:
16 December 2016
Summary
OpenSSL vulnerabilities were disclosed recently by the OpenSSL Project.
OpenSSL is used by Rational BuildForge Agent shipped with IBM Rational Team
Concert. Rational BuildForge has addressed the applicable CVEs.
Vulnerability Details
CVEID:
CVE-2016-1240
DESCRIPTION:
Apache Tomcat could allow a local attacker to gain elevated privileges on
the system, caused by the exploitation of an unsafe chown command in Tomcat
init script. An attacker could exploit this vulnerability to gain root
privileges on the system.
CVSS Base Score: 8.4
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/117091
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID:
CVE-2016-6797
DESCRIPTION
: Apache Tomcat could allow a remote attacker to gain unauthorized access to
the system, caused by an error in the ResourceLinkFactory. An attacker could
exploit this vulnerability to gain access to arbitrary global JNDI resources.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/118403
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID:
CVE-2016-0762
DESCRIPTION
: Apache Tomcat could allow a remote attacker to obtain sensitive
information, caused by the failure to process the user supplied password if
the specified user name does not exist by the Realm implementation. An
attacker could exploit this vulnerability to conduct a timing attack and
determine valid usernames on the system.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/118407
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVEID:
CVE-2016-5018
DESCRIPTION:
Apache Tomcat could allow a remote attacker to bypass security
restrictions. An attacker could exploit this vulnerability using a Tomcat
utility method to bypass a configured SecurityManager.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/118406
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID:
CVE-2016-6794
DESCRIPTION:
Apache Tomcat could allow a remote attacker to obtain sensitive
information, caused by an error in the system property replacement feature.
An attacker could exploit this vulnerability to bypass the SecurityManager
and read system properties.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/118405
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVEID:
CVE-2016-6796
DESCRIPTION:
Apache Tomcat could allow a remote attacker to bypass security
restrictions. By modifying configuration parameters for the JSP Servlet, an
attacker could exploit this vulnerability to bypass a configured
SecurityManager.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/118404
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID:
CVE-2016-2177
DESCRIPTION:
OpenSSL is vulnerable to a denial of service, caused by the incorrect use
of pointer arithmetic for heap-buffer boundary checks. By leveraging
unexpected malloc behavior, a remote attacker could exploit this
vulnerability to trigger an integer overflow and cause the application to
crash.
CVSS Base Score: 5.9
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/113890
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID:
CVE-2016-2178
DESCRIPTION:
OpenSSL could allow a remote attacker to obtain sensitive information,
caused by an error in the DSA implementation that allows the following of a
non-constant time codepath for certain operations. An attacker could exploit
this vulnerability using a cache-timing attack to recover the private DSA
key.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/113889
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVEID:
CVE-2016-6306
DESCRIPTION:
OpenSSL is vulnerable to a denial of service, caused by missing message
length checks when parsing certificates. A remote authenticated attacker
could exploit this vulnerability to trigger an out-of-bounds read and cause a
denial of service.
CVSS Base Score: 4.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/117112
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)
CVEID:
CVE-2016-6302
DESCRIPTION:
OpenSSL is vulnerable to a denial of service, caused by the failure to
consider the HMAC size during validation of the ticket length by the
tls_decrypt_ticket function A remote attacker could exploit this
vulnerability using a ticket that is too short to cause a denial of service.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/117024
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
CVEID:
CVE-2016-6304
DESCRIPTION:
OpenSSL is vulnerable to a denial of service, caused by multiple memory
leaks in t1_lib.c during session renegotiation. By sending an overly large
OCSP Status Request extension, a remote attacker could exploit this
vulnerability to consume all available memory resources.
CVSS Base Score: 7.5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/117110
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID:
CVE-2016-6303
DESCRIPTION:
OpenSSL is vulnerable to a denial of service, caused by an integer overflow
in the MDC2_Update function. By using unknown attack vectors, a remote
attacker could exploit this vulnerability to trigger an out-of-bounds write
and cause the application to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/117023
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
CVEID:
CVE-2016-2182
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by an out-of-bounds
write in the TS_OBJ_print_bio function in crypto/bn/bn_print.c. A remote
attacker could exploit this vulnerability using a specially crafted value to
cause the application to crash.
CVSS Base Score: 4.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/116342
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
CVEID:
CVE-2016-2180
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by an out-of-bounds
read in the TS_OBJ_print_bio function. A remote attacker could exploit this
vulnerability using a specially crafted time-stamp file to cause the
application to crash.
CVSS Base Score: 7.5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/115829
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID:
CVE-2016-2181
DESCRIPTION:
OpenSSL is vulnerable to a denial of service, caused by an error in the
DTLS replay protection implementation. By sending a specially crafted
sequence number, a remote attacker could exploit this vulnerability to cause
valid packets to be dropped.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/116344
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
CVEID:
CVE-2016-2183
DESCRIPTION:
OpenSSL could allow a remote attacker to obtain sensitive information,
caused by an error in the in the Triple-DES on 64-bit block cipher, used as a
part of the SSL/TLS protocol. By capturing large amounts of encrypted traffic
between the SSL/TLS server and the client, a remote attacker able to conduct
a man-in-the-middle attack could exploit this vulnerability to recover the
plaintext data and obtain sensitive information. This vulnerability is known
as the SWEET32 Birthday attack.
CVSS Base Score: 3.7
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/116337
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVEID:
CVE-2016-6325
DESCRIPTION:
Red Hat Enterprise Linux, JBoss Web Server and JBoss EWS could allow a
local attacker to gain elevated privileges on the system, caused by the
installation of /etc/sysconfig/tomcat and /etc/tomcat/tomcat.conf
configuration files with insecure permissions by the Tomcat package. An
attacker could exploit this vulnerability using membership in the Tomcat
group to gain elevated privileges on the system.
CVSS Base Score: 7.8
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/117859
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVEID:
CVE-2016-5425
DESCRIPTION:
Multiple Apache Tomcat packages on Red Hat Enterprise Linux (RHEL) 7,
Fedora, CentOS, Oracle Linux, and possibly other Linux distributions could
allow a local attacker to gain elevated privileges on the system, caused by
the installation of the /user/lib/tmpfiles.d/tomcat.conf configuration file
with insecure permissions. An attacker could exploit this vulnerability using
the systemd-tmpfiles service to gain root privileges on the system.
CVSS Base Score: 8.4
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/117580
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID:
CVE-2016-6816
DESCRIPTION:
Apache Tomcat is vulnerable to HTTP response splitting attacks, caused by
improper validation of user-supplied input. A remote attacker could exploit
this vulnerability to inject arbitrary HTTP headers and cause the server to
return a split response, once the URL is clicked. This would allow the
attacker to perform further attacks, such as Web cache poisoning or cross-
site scripting, and possibly obtain sensitive information.
CVSS Base Score: 6.1
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/119158
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
CVEID:
CVE-2016-6817
DESCRIPTION:
Apache Tomcat is vulnerable to a denial of service. By sending a specially
crafted HTTP/2 header, a remote attacker could exploit this vulnerability to
cause the application to enter into an infinite loop.
CVSS Base Score: 7.5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/119156
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID:
CVE-2016-8735
DESCRIPTION:
Apache Tomcat could allow a remote attacker to execute arbitrary code on
the system, caused by an error in the JmxRemoteLifecycleListener. By sending
specially crafted data to a JMX port, an attacker could exploit this
vulnerability to execute arbitrary code on the system with elevated
privileges.
CVSS Base Score: 7.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/119157
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
Affected Products and Versions
Rational Collaborative Lifecycle Management 4.0 - 6.0.3
Rational Team Concert 4.0 - 4.0.7
Rational Team Concert 5.0 - 5.0.2
Rational Team Concert 6.0 - 6.0.3
Remediation/Fixes
Upgrade your Rational Build Forge Agent to version 8.0.0.4 iFix1 from:
BuildForge 8.0.0.4 iFix1
Workarounds and Mitigations
none
Important note
IBM strongly suggests that all System z customers be subscribed to the System
z Security Portal to receive the latest critical System z security and
integrity service. If you are not subscribed, see the instructions on the
System z Security web site
. Security and integrity APARs and associated fixes will be posted to this
portal. IBM suggests reviewing the CVSS scores and applying all security or
integrity fixes as soon as possible to minimize any potential risk.
References
Complete CVSS v3 Guide
On-line Calculator v3
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
16 December 2016: Initial Publication
*The CVSS Environment Score is customer environment specific and will
ultimately impact the Overall CVSS Score. Customers can evaluate the impact
of this vulnerability in their environments by accessing the links in the
Reference section of this Security Bulletin.
Disclaimer
According to the Forum of Incident Response and Security Teams (FIRST), the
Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY
OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT
OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
Cross reference information
Segment Product Component Platform Version Edition
Software Rational Collaborative General AIX, Linux, iOS, 4.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6,
Development Lifecycle Management Information Solaris, Windows 4.0.7, 5.0, 5.0.1, 5.0.2, 6.0, 6.0.1, 6.0.2,
6.0.3
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