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AUSCERT External Security Bulletin Redistribution
ESB-2014.0962
AIX OpenSSL SSL/TLS Man In The Middle (MITM) vulnerability
12 June 2014
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: IBM AIX OpenSSL
Publisher: IBM
Operating System: AIX
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Access Privileged Data -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-3470 CVE-2014-0224 CVE-2014-0221
CVE-2014-0198 CVE-2014-0195
Reference: ASB-2014.0069.2
ASB-2014.0068
ESB-2014.0952
ESB-2014.0951
ESB-2014.0888
ESB-2014.0887
ESB-2014.0755
ESB-2014.0751
Original Bulletin:
https://aix.software.ibm.com/aix/efixes/security/openssl_advisory9.asc
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IBM SECURITY ADVISORY
First Issued: Wed Jun 11 06:39:27 CDT 2014
The most recent version of this document is available here:
http://aix.software.ibm.com/aix/efixes/security/openssl_advisory9.asc
https://aix.software.ibm.com/aix/efixes/security/openssl_advisory9.asc
ftp://aix.software.ibm.com/aix/efixes/security/openssl_advisory9.asc
===============================================================================
VULNERABILITY SUMMARY
1.VULNERABILITY: AIX OpenSSL SSL/TLS Man In The Middle (MITM) vulnerability
PLATFORMS: AIX 5.3, 6.1 and 7.1
VIOS 2.2.*
SOLUTION: Apply the fix as described below.
THREAT: See below
CVE Numbers: CVE-2014-0224
Reboot required? NO
Workarounds? NO
Protected by FPM? NO
Protected by SED? NO
2. VULNERABILITY: AIX OpenSSL DTLS recursion flaw
PLATFORMS: AIX 5.3, 6.1 and 7.1
VIOS 2.2.*
SOLUTION: Apply the fix as described below.
THREAT: See below
CVE Numbers: CVE-2014-0221
Reboot required? NO
Workarounds? NO
Protected by FPM? NO
Protected by SED? NO
3. VULNERABILITY: AIX OpenSSL DTLS invalid fragment vulnerability
PLATFORMS: AIX 5.3, 6.1 and 7.1
VIOS 2.2.*
SOLUTION: Apply the fix as described below.
THREAT: See below
CVE Numbers: CVE-2014-0195
Reboot required? NO
Workarounds? NO
Protected by FPM? NO
Protected by SED? NO
4. VULNERABILITY: AIX OpenSSL SSL_MODE_RELEASE_BUFFERS NULL pointer
dereference
PLATFORMS: AIX 5.3, 6.1 and 7.1
VIOS 2.2.*
SOLUTION: Apply the fix as described below.
THREAT: See below
CVE Numbers: CVE-2014-0198
Reboot required? NO
Workarounds? NO
Protected by FPM? NO
Protected by SED? NO
5. VULNERABILITY: AIX OpenSSL Anonymous ECDH denial of service
PLATFORMS: AIX 5.3, 6.1 and 7.1
VIOS 2.2.*
SOLUTION: Apply the fix as described below.
THREAT: See below
CVE Numbers: CVE-2014-3470
Reboot required? NO
Workarounds? NO
Protected by FPM? NO
Protected by SED? NO
===============================================================================
DETAILED INFORMATION
I. DESCRIPTION
1. CVE-2014-0224
OpenSSL could allow a Man-in-the-middle(MITM) attacker to force the use of
weak keying material in OpenSSL SSL/TLS clients and servers. The attacker
can decrypt and modify traffic from the attacked client and server. The
attack can only be performed between a vulnerable client *and* server.
2. CVE-2014-0221
OpenSSL could allow an attacker to cause Denial of Service information.
The attacker can send a invalid DTLS handshake to an OpenSSL DTLS client,
resulting recursive execution of code and eventual crash.
3. CVE-2014-0195
OpenSSL could allow an attacker to cause a "buffer overrun" situation. This
is triggered when an attacker sends an invalid DTLS fragments to an OpenSSL
DTLS client or server, and thus forcing it to run arbitrary code on a
vulnerable client or server.
4. CVE-2014-0198
OpenSSL could allow an attacker to cause Denial of Service information.
The attacker will be able to exploit the flaw in the do_ssl3_write function
via a NULL pointer dereference.
5. CVE-2014-3470
OpenSSL could allow an attacker to cause Denial of Service information.
The attacker will be able to exploit the software's anonymous ECDH cipher
suites present within OpenSSL clients.
II. CVSS
1. CVE-2014-0224
CVSS Base Score: 5.8
CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/93586
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:N/A:N)
2. CVE-2014-0221
CVSS Base Score: 4.3
CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/93587
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:N/A:N)
3. CVE-2014-0195
CVSS Base Score: 7.5
CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/93588
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:N/A:N)
4. CVE-2014-0198
CVSS Base Score: 4.3
CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/93000
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:N/A:N)
5. CVE-2014-3470
CVSS Base Score: 4.3
CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/93589
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:N/A:N)
III. PLATFORM VULNERABILITY ASSESSMENT
To determine if your system is vulnerable, execute the following
command:
lslpp -L openssl.base
The following fileset levels are vulnerable:
A. CVE-2014-0198
AIX Fileset Lower Level Upper Level KEY
--------------------------------------------------------
openssl.base 1.0.1.500 1.0.1.510 key_w_fs
B. CVE-2014-0224, CVE-2014-0221, CVE-2014-0195, CVE-2014-3470
AIX Fileset Lower Level Upper Level KEY
--------------------------------------------------------
openssl.base 1.0.1.500 1.0.1.510 key_w_fs
openssl.base 0.9.8.401 0.9.8.2501 key_w_fs
openssl.base 12.9.8.1100 12.9.8.2501 key_w_fs
IV. SOLUTIONS
A fix is available, and it can be downloaded from:
https://www14.software.ibm.com/webapp/iwm/web/preLogin.do?source=aixbp
To extract the fixes from the tar file:
For Openssl 1.0.1 version -
zcat openssl-1.0.1.511.tar.Z | tar xvf -
For Openssl 0.9.8 version -
zcat openssl-0.9.8.2502.tar.Z | tar xvf -
For Openssl 12.9.8 version -
zcat openssl-12.9.8.2502.tar.Z | tar xvf -
IMPORTANT: If possible, it is recommended that a mksysb backup
of the system be created. Verify it is both bootable and
readable before proceeding.
To preview the fix installation:
installp -apYd . openssl
To install the fix package:
installp -aXYd . openssl
V. WORKAROUNDS
No workarounds.
VI. CONTACT INFORMATION
If you would like to receive AIX Security Advisories via email,
please visit:
http://www.ibm.com/systems/support
and click on the "My notifications" link.
To view previously issued advisories, please visit:
http://www14.software.ibm.com/webapp/set2/subscriptions/onvdq
Comments regarding the content of this announcement can be
directed to:
security-alert@austin.ibm.com
To obtain the OpenSSL public key that can be used to verify the
signed advisories and ifixes:
Download the key from our web page:
http://www.ibm.com/systems/resources/systems_p_os_aix_security_pgpkey.txt
To obtain the PGP public key that can be used to communicate
securely with the AIX Security Team you can either:
A. Send an email with "get key" in the subject line to:
security-alert@austin.ibm.com
B. Download the key from a PGP Public Key Server. The key ID is:
0x28BFAA12
Please contact your local IBM AIX support center for any
assistance.
VII. REFERENCES:
Note: Keywords labeled as KEY in this document are used for parsing
purposes.
eServer is a trademark of International Business Machines
Corporation. IBM, AIX and pSeries are registered trademarks of
International Business Machines Corporation. All other trademarks
are property of their respective holders.
Complete CVSS Guide: http://www.first.org/cvss/cvss-guide.html
On-line Calculator V2:
http://nvd.nist.gov/cvss.cfm?calculator&adv&version=2
X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/93586
X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/93587
X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/93588
X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/93000
X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/93589
CVE-2014-0224 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0224
CVE-2014-0221 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0221
CVE-2014-0195 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0195
CVE-2014-0198 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0198
CVE-2014-3470 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3470
*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 Flash.
Note: 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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