IBM SECURITY ADVISORY First Issued: Wed Feb 4 06:24:41 CST 2015 The most recent version of this document is available here: http://aix.software.ibm.com/aix/efixes/security/openssl_advisory12.asc https://aix.software.ibm.com/aix/efixes/security/openssl_advisory12.asc ftp://aix.software.ibm.com/aix/efixes/security/openssl_advisory12.asc =============================================================================== VULNERABILITY SUMMARY 1. VULNERABILITY: AIX OpenSSL does not properly calculate the square of a BIGNUM value which makes it easier for attacker to defeat cryptographic protection mechanisms 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-2014-3570 Reboot required? NO Workarounds? NO Protected by FPM? NO Protected by SED? NO 2.VULNERABILITY: AIX OpenSSL Denial of Service due to NULL pointer dereference while processing a DTLS message 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-2014-3571 Reboot required? NO Workarounds? NO Protected by FPM? NO Protected by SED? NO 3. VULNERABILITY: AIX OpenSSL allows remote SSL servers to conduct ECDHE-to-ECDH downgrade attacks and thereby causing loss of forward secrecy 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-2014-3572 Reboot required? NO Workarounds? NO Protected by FPM? NO Protected by SED? NO 4. VULNERABILITY: AIX OpenSSL allows remote attackers to defeat the fingerprint-based certificate blacklist protection mechanism 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-2014-8275 Reboot required? NO Workarounds? NO Protected by FPM? NO Protected by SED? NO 5. VULNERABILITY: AIX OpenSSL allows remote SSL servers to conduct RSA-to-EXPORT_RSA downgrade attacks and thereby offering a weak ephemeral RSA key in a noncompliant role 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-2015-0204 Reboot required? NO Workarounds? NO Protected by FPM? NO Protected by SED? NO 6. VULNERABILITY: AIX OpenSSL allows remote attackers to obtain access without knowledge of a private key on a server that recognizes a Certification Authority with DH support 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-2015-0205 Reboot required? NO Workarounds? NO Protected by FPM? NO Protected by SED? NO 7. VULNERABILITY: AIX OpenSSL allows remote attackers to cause Denial of Service by sending many duplicate records for the next epoch, leading to failure of replay detection 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-2015-0206 Reboot required? NO Workarounds? NO Protected by FPM? NO Protected by SED? NO =============================================================================== DETAILED INFORMATION I. DESCRIPTION 1. CVE-2014-3570 OpenSSL does not properly calculate the square of a BIGNUM value, which might make it easier for remote attackers to defeat cryptographic protection mechanisms via unspecified vectors 2. CVE-2014-3571 OpenSSL allows remote attackers to cause a denial of service via a crafted DTLS message that is processed with a different read operation for the handshake header than for the handshake body 3. CVE-2014-3572 OpenSSL allows remote SSL servers to conduct ECDHE-to-ECDH downgrade attacks and trigger loss of forward secrecy by omitting the ServerKeyExchange message. 4. CVE-2014-8275 OpenSSL does not enforce certain constraints on certificate data, which allows remote attackers to defeat a fingerprint-based certificate-blacklist protection mechanism by including crafted data within a certificate's unsigned portion 5. CVE-2015-0204 OpenSSL allows remote SSL servers to conduct RSA-to-EXPORT_RSA downgrade attacks and facilitate brute-force decryption by offering a weak ephemeral RSA key in a noncompliant role. 6. CVE-2015-0205 OpenSSL accepts client authentication with a Diffie-Hellman (DH) certificate without requiring a CertificateVerify message, which allows remote attackers to obtain access without knowledge of a private key via crafted TLS Handshake Protocol traffic to a server that recognizes a Certification Authority with DH support. 7. CVE-2015-0206 OpenSSL could allow remote attackers to cause a denial of service (memory consumption) by sending many duplicate records for the next epoch, leading to failure of replay detection. II. CVSS 1. CVE-2014-3570 CVSS Base Score: 2.6 CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/99710 CVSS Environmental Score*: Undefined CVSS Vector: AV:N/AC:H/Au:N/C:N/I:P/A:N 2. CVE-2014-3571 CVSS Base Score: 5 CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/99703 CVSS Environmental Score*: Undefined CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P 3. CVE-2014-3572 CVSS Base Score: 1.2 CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/99705 CVSS Environmental Score*: Undefined CVSS Vector: AV:L/AC:H/Au:N/C:N/I:P/A:N 4. CVE-2014-8275 CVSS Base Score: 1.2 CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/99709 CVSS Environmental Score*: Undefined CVSS Vector: AV:L/AC:H/Au:N/C:N/I:P/A:N 5. CVE-2015-0204 CVSS Base Score: 1.2 CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/99707 CVSS Environmental Score*: Undefined CVSS Vector: AV:L/AC:H/Au:N/C:N/I:P/A:N 6. CVE-2015-0205 CVSS Base Score: 2.1 CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/99708 CVSS Environmental Score*: Undefined CVSS Vector: AV:N/AC:H/Au:S/C:N/I:P/A:N 7. CVE-2015-0206 CVSS Base Score: 5 CVSS Temporal Score: http://xforce.iss.net/xforce/xfdb/99704 CVSS Environmental Score*: Undefined CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P 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-2014-3572, CVE-2015-0205, CVE-2015-0206 AIX Fileset Lower Level Upper Level ------------------------------------------ openssl.base 1.0.1.500 1.0.1.513 B. CVE-2014-3570, CVE-2014-3571, CVE-2014-8275, CVE-2015-0204 AIX Fileset Lower Level Upper Level ------------------------------------------ openssl.base 1.0.1.500 1.0.1.513 openssl.base 0.9.8.401 0.9.8.2504 openssl.base 12.9.8.1100 12.9.8.2504 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_fix12.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 IV69033s9a.150129.epkg.Z openssl.base(1.0.1.513 version) 5.3, 6.1, 7.1 IV69033s9b.150129.epkg.Z openssl.base(0.9.8.2504 version) 5.3, 6.1, 7.1 IV69033s9c.150129.epkg.Z openssl.base(12.9.8.2504 version) VIOS Level Interim Fix (*.Z) Fileset Name(prereq for installation) ------------------------------------------------------------------------------------- 2.2.* IV69033s9a.150129.epkg.Z openssl.base(1.0.1.513 version) 2.2.* IV69033s9b.150129.epkg.Z openssl.base(0.9.8.2504 version) 2.2.* IV69033s9c.150129.epkg.Z openssl.base(12.9.8.2504 version) To extract the fix from the tar file: tar xvf openssl_fix12.tar cd openssl_fix12 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 ---------------------------------------------------------------------------------------------- ba67b128e22ca028756100a473137b64cd8758c8182e4cda8bc3293b69cb53ba IV69033s9a.150129.epkg.Z 1c244927ae807d9c55dee91366ac88488a1312103a19f3017758989f91759f48 IV69033s9b.150129.epkg.Z 361e751b0ce323b57b8865fca66e90f0dc541857a04b4c67f55874b01e98fffb IV69033s9c.150129.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_advisory12.asc.sig https://aix.software.ibm.com/aix/efixes/security/openssl_advisory12.asc.sig ftp://aix.software.ibm.com/aix/efixes/security/openssl_advisory12.asc.sig openssl dgst -sha1 -verify -signature .sig openssl dgst -sha1 -verify -signature .sig 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/99710 X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/99703 X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/99705 X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/99709 X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/99707 X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/99708 X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/99704 CVE-2014-3570 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3570 CVE-2014-3571 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3571 CVE-2014-3572 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3572 CVE-2014-8275 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8275 CVE-2015-0204 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0204 CVE-2015-0205 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0205 CVE-2015-0206 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0206 *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.