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AUSCERT External Security Bulletin Redistribution
ESB-2014.0715
Security Bulletin: IBM Tivoli Composite Application Manager for
Transactions is affected by vulnerabilities in OpenSSL
(CVE-2014-0160 and CVE-2014-0076)
13 May 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Tivoli Composite Application Manager for Transactions
Publisher: IBM
Operating System: AIX
Linux variants
Solaris
Windows
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-0160 CVE-2014-0076
Reference: ASB-2014.0042
ESB-2014.0564
ESB-2014.0511
ESB-2014.0501
ESB-2014.0457
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21672507
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Security Bulletin: IBM Tivoli Composite Application Manager for Transactions
is affected by vulnerabilities in OpenSSL (CVE-2014-0160 and CVE-2014-0076)
Security Bulletin
Document information
More support for:
Tivoli Composite Application Manager for Transactions
ITCAM for ISM 5724-Q22 v601
Software version:
7.2, 7.3, 7.4
Operating system(s):
AIX, Linux, Solaris, Windows
Software edition:
All Editions
Reference #:
1672507
Modified date:
2014-05-12
Summary
Security vulnerabilities have been discovered in OpenSSL.
Vulnerability Details
CVE-ID: CVE-2014-0160
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive
information, caused by an error in the TLS/DTLS heartbeat functionality. An
attacker could exploit this vulnerability to expose 64k of private memory and
retrieve secret keys. An attacker can repeatedly expose additional 64k chunks
of memory. This vulnerability can be remotely exploited, authentication is not
required and the exploit is not complex. It can be exploited on any system
(ie. server, client, agent) receiving connections using the vulnerable OpenSSL
library.
CVSS Base Score: 5
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/92322
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Warning: We strongly encourage you to take action as soon as possible as
potential implications to your environment may be more serious than indicated
by the CVSS score.
CVE-ID: CVE-2014-0076
DESCRIPTION: OpenSSL could allow a local attacker to obtain sensitive
information, caused by an implementation error in ECDSA (Elliptic Curve
Digital Signature Algorithm). An attacker could exploit this vulnerability
using the FLUSH+RELOAD cache side-channel attack to recover ECDSA nonces. This
vulnerability can only be exploited locally, authentication is not required
and the exploit is not complex. An exploit can only partially affect
confidentially, but not integrity or availability.
CVSS Base Score: 2.1
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/91990
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:N)
Affected Products and Versions
IBM Tivoli Composite Application Manager (ITCAM) for Transactions is affected.
ITCAM for Transactions contains multiple sub components (Agents). Only the
Internet Service Monitor (ISM – Agent code ‘IS’) is affected.
Versions:
· 7.4 – Affected by both CVE-2014-0160 and CVE-2014-0076
· 7.3 – Affected by both CVE-2014-0160 and CVE-2014-0076
· 7.2 – Affected by both CVE-2014-0160 and CVE-2014-0076
· 7.1 – Is only affected by CVE-2014-0076 (ECDSA)
Remediation/Fixes
Product VRMF APAR Remediation/First Fix
7.3.0.1-TIV-CAMIS-IF0028 7.3.0.1 IV38085 http://www-01.ibm.com/support/docview.wss?rs=0&uid=isg400001771
(and others)
7.4.0.0-TIV-CAMIS-IF0011 7.4.0.0 IV38085 http://www-01.ibm.com/support/docview.wss?rs=0&uid=isg400001775
(and others)
Fix for 7.2 maintenance stream will be available on 30th May 2014.
Customers on older 7.1 and 7.2 releases are strongly encouraged to upgrade to
7.4. Please see Workaround/Mitigation section on additional suggestions on to
mitigate this issue.
After applying the fix, additional instructions are needed for CVE-2014-0160
1) Replace your SSL Certificates.
You need to revoke existing SSL certificates and reissue new certificates. You
need to be sure not to generate the new certificates using the old private key
and create a new private key (ie using "openssl genrsa") and use that new
private key to create the new certificate signing request (CSR).
2) Reset User Credentials
Users of network facing applications protected by a vulnerable version of
OpenSSL should be forced to reset their passwords and should revoke any
authentication or session related cookies set prior to the time OpenSSL was
upgraded and force the user to re-authenticate.
Warning: Your environment may require additional fixes for other products,
including non-IBM products. Please replace the SSL certificates and reset the
user credentials after applying the necessary fixes to your environment.
Workarounds and Mitigations
The Internet Service Monitor (ISM) agent consists of the following parts:
· Bridge – the communications hub between kisagent and the monitors
· kisagent – the IBM Tivoli Monitoring Agent that talks with the TEMS
· Multiple monitors for different protocols – eg HTTP monitor, POP monitor.
OpenSSL vulnerabilities impact ISM as follows:
1. The bridge acts as an OpenSSL server, accepting connections from kisagent
and monitors.
2. The kisagent and the individual monitors are OpenSSL clients, connecting to
the bridge
3. Some protocol monitors also uses OpenSSL as part of their protocol
monitoring; eg HTTPS monitor uses OpenSSL to form the Secure connection to
HTTP servers.
Mitigation strategies:
1) Securing the Bridge as an OpenSSL server.
Communication to and from the bridge between monitors and the bridge and the
kisagent are secured via OpenSSL. This can be disabled via the properties
file. You set:
BridgeSSLEncryption : 0
Additionally, only monitors and ISM kisagent should be communicating with the
bridge. Firewalls can be used to ensure only ISM kisagent/monitors are
connecting to the bridge.
2) Securing the kisagent and monitors as OpenSSL clients to the bridge.
Disable SSL at the bridge (see previous point).
Ensure that kisagent/monitors ONLY connect to known bridges; this can be
achieved by strict firewall rules and/or configuration management. The
relevant configuration files controlling bridge configuration are located at:
<ITMHOME>\TMAITM6\ism\etc\props\<monitor>.prop
The BridgePort property of the “Bridge Properties†stanza should be explicitly
configured.
The property file for the kisagent (kisagent.props) should set BridgeIPAddress
in additional to BridgePort.
3) Securing the individual monitors.
Individual monitors that connect to monitoring targets via OpenSSL are
vulnerable. This is known as reverse Heartbleed, where a malicious server can
attack the client.
Vulnerable monitors and mitigation are as follows:
· The HTTPS Monitor is vulnerable but you can specify the disableTLS option
which will disable TLS.
· The POP3 Monitor is exploitable but only if the element specifies STARTTLS.
Those profiles could be disabled
· The IMAP Monitor is exploitable with any profile which is using a STARTLS
set. Those profiles can be disabled
· The LDAP Monitor Is exploitable if SIMPLE-SSL is set in the element. Those
profiles can be disabled
References
Complete CVSS Guide
On-line Calculator V2
OpenSSL Project vulnerability website
Heartbleed
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Acknowledgement
None
Change History
5 May 2014: Original Copy Published
*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.
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