IBM SECURITY ADVISORY First Issued: The most recent version of this document is available here: http://aix.software.ibm.com/aix/efixes/security/openssl_advisory11.asc https://aix.software.ibm.com/aix/efixes/security/openssl_advisory11.asc ftp://aix.software.ibm.com/aix/efixes/security/openssl_advisory11.asc =============================================================================== VULNERABILITY SUMMARY 1.VULNERABILITY: AIX OpenSSL Denial of Service due to memory leak in DTLS SRTP extension 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-2014-3513 Reboot required? NO Workarounds? NO Protected by FPM? NO Protected by SED? NO 2. VULNERABILITY: AIX OpenSSL Patch to mitigate CVE-2014-3566 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-2014-3566 Reboot required? NO Workarounds? NO Protected by FPM? NO Protected by SED? NO 3. VULNERABILITY: AIX OpenSSL Denial of Service due to memory consumption 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-2014-3567 Reboot required? NO Workarounds? NO Protected by FPM? NO Protected by SED? NO =============================================================================== DETAILED INFORMATION I. DESCRIPTION 1. CVE-2014-3513 OpenSSL could allow remote attackers to cause a denial of service (memory consumption) via crafted handshake message 2. CVE-2014-3566 SSL protocol 3.0 uses nondeterministic CBC padding, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack. 3. CVE-2014-3567 OpenSSL could allow remote attackers to cause a denial of service (memory consumption) via crafted session ticket that triggers an integrity-check failure. II. CVSS 1. CVE-2014-3513 CVSS Base Score: 5 CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/97035 CVSS Environmental Score*: Undefined CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:N/A:N) 2. CVE-2014-3566 CVSS Base Score: 4.3 CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/97013 CVSS Environmental Score*: Undefined CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:N/A:N) 3. CVE-2014-3567 CVSS Base Score: 5 CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/97036 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-2014-3513 AIX Fileset Lower Level Upper Level ------------------------------------------ openssl.base 1.0.1.500 1.0.1.512 B. CVE-2014-3566, CVE-2014-3567 AIX Fileset Lower Level Upper Level ------------------------------------------ openssl.base 1.0.1.500 1.0.1.512 openssl.base 0.9.8.401 0.9.8.2503 openssl.base 12.9.8.1100 12.9.8.2503 Note, 0.9.8.401 and 12.9.8.1100 are the Lowest OpenSSL version available in aix web download site. Even OpenSSL versions below this are impacted IV. SOLUTIONS A. FIXES Fix is available. The fix can be downloaded via ftp from: ftp://aix.software.ibm.com/aix/efixes/security/openssl_fix11.tar The link above is to a tar file containing this signed advisory, fix packages, and OpenSSL signatures for each package. The fixes below include prerequisite checking. This will enforce the correct mapping between the fixes and AIX releases. Note that the tar file contains Interim fixes that are based on OpenSSL version. AIX Level Interim Fix (*.Z) Fileset Name(prereq for installation) --------------------------------------------------------------------------------- 5.3, 6.1, 7.1 IV66250s9a.141027.epkg.Z openssl.base(1.0.1.512 version) 5.3, 6.1, 7.1 IV66250s9b.141027.epkg.Z openssl.base(0.9.8.2503 version) 5.3, 6.1, 7.1 IV66250s9c.141027.epkg.Z openssl.base(12.9.8.2503 version) VIOS Level Interim Fix (*.Z) Fileset Name(prereq for installation) ------------------------------------------------------------------------------------- 2.2.* IV66250s9a.141027.epkg.Z openssl.base(1.0.1.512 version) 2.2.* IV66250s9b.141027.epkg.Z openssl.base(0.9.8.2503 version) 2.2.* IV66250s9c.141027.epkg.Z openssl.base(12.9.8.2503 version) To extract the fix from the tar file: tar xvf openssl_fix11.tar cd openssl_fix11 Verify you have retrieved the fix intact: The checksums below were generated using the "openssl dgst -sha256 file" command is the followng: openssl dgst -sha256 filename ---------------------------------------------------------------------------------------------- 5bde653c4cb972b7068aa99a49c4a388abf2cdc0627fd61d2a7278b7a5d1e1cb IV66250s9a.141027.epkg.Z b8a8c74835add78314e48540640f50478ec11b08195fe2df979f7d1597722a60 IV66250s9b.141027.epkg.Z 8b3b019c6ed2bf0d54ed93f2e5159ace136c7ad7a8d3b1735748c0f13a4bc1cf IV66250s9c.141027.epkg.Z These sums should match exactly. The OpenSSL signatures in the tar file and on this advisory can also be used to verify the integrity of the fixes. If the sums or signatures cannot be confirmed, contact IBM AIX Security at security-alert@austin.ibm.com and describe the discrepancy. Published advisory OpenSSL signature file location: http://aix.software.ibm.com/aix/efixes/security/openssl_advisory11.asc.sig https://aix.software.ibm.com/aix/efixes/security/openssl_advisory11.asc.sig ftp://aix.software.ibm.com/aix/efixes/security/openssl_advisory11.asc.sig openssl dgst -sha1 -verify -signature .sig openssl dgst -sha1 -verify -signature .sig These fixes will also be part of the next filesets of OpenSSL versions 0.9.8.2504, 12.9.8.2504 and 1.0.1.513. The estimated availability date of filesets is by 1st December 2014 and can be downloaded from - https://www14.software.ibm.com/webapp/iwm/web/reg/download.do?source=aixbp&lang=en_US&S_PKG=openssl&cp=UTF-8 B. FIX AND INTERIM FIX INSTALLATION 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 a fix installation: installp -a -d fix_name -p all # where fix_name is the name of the # fix package being previewed. To install a fix package: installp -a -d fix_name -X all # where fix_name is the name of the # fix package being installed. Interim fixes have had limited functional and regression testing but not the full regression testing that takes place for Service Packs; however, IBM does fully support them. Interim fix management documentation can be found at: http://www14.software.ibm.com/webapp/set2/sas/f/aix.efixmgmt/home.html To preview an interim fix installation: emgr -e ipkg_name -p # where ipkg_name is the name of the # interim fix package being previewed. To install an interim fix package: emgr -e ipkg_name -X # where ipkg_name is the name of the # interim fix package being installed. V. WORKAROUNDS No workarounds. VI. CONTACT US: If you would like to receive AIX Security Advisories via email, please visit "My Notifications": http://www.ibm.com/support/mynotifications 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_pubkey.txt To obtain the PGP public key that can be used to communicate securely with the AIX Security Team via security-alert@austin.ibm.com you can either: A. Download the key from our web page: http://www.ibm.com/systems/resources/systems_p_os_aix_security_pgppubkey.txt 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/97035 X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/97013 X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/97036 CVE-2014-3513 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3513 CVE-2014-3566 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3566 CVE-2014-3567 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3567 *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.