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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3891 Vulnerabilities in GSKit affect IBM Tivoli Directory Server and IBM Security Directory Server for AIX 17 December 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM AIX Publisher: IBM Operating System: AIX Impact/Access: Access Privileged Data -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-1447 CVE-2018-1427 CVE-2018-1426 CVE-2018-1388 CVE-2016-0702 Reference: ASB-2017.0219 ASB-2016.0074 ASB-2016.0042 ESB-2018.2962 Original Bulletin: http://www.ibm.com/support/docview.wss?uid=ibm10788069 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Vulnerabilities in GSKit affect IBM Tivoli Directory Server and IBM Security Directory Server for AIX Security Bulletin Document information More support for: AIX family Software version: 5.3, 6.1, 7.1, 7.2 Operating system(s): AIX Reference #: 0788069 Modified date: 14 December 2018 Summary There are multiple vulnerabilities in GSKit that affect IBM Tivoli Directory Server and IBM Security Directory Server for AIX. Vulnerability Details CVEID: CVE-2018-1388 DESCRIPTION: GSKit V7 may disclose side channel information via discrepencies between valid and invalid PKCS#1 padding. CVSS Base Score: 9.1 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/138212 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N) CVEID: CVE-2018-1427 DESCRIPTION: IBM GSKit contains several enviornment variables that a local attacker could overflow and cause a denial of service. CVSS Base Score: 6.2 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/139072 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) CVEID: CVE-2018-1426 DESCRIPTION: IBM GSKit duplicates the PRNG state across fork() system calls when multiple ICC instances are loaded which could result in duplicate Session IDs and a risk of duplicate key material. CVSS Base Score: 7.4 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/139071 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N) CVEID: CVE-2016-0702 DESCRIPTION: OpenSSL could allow a local attacker to obtain sensitive information, caused by a side-channel attack against a system based on the Intel Sandy-Bridge microarchitecture. An attacker could exploit this vulnerability to recover RSA keys. CVSS Base Score: 2.9 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111144 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N) CVEID: CVE-2018-1447 DESCRIPTION: The GSKit CMS KDB logic fails to salt the hash function resulting in weaker than expected protection of passwords. A weak password may be recovered. Note: After update the customer should change password to ensure the new password is stored more securely. Products should encourage customers to take this step as a high priority action. CVSS Base Score: 5.1 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/139972 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N) Affected Products and Versions AIX 5.3, 6.1, 7.1, 7.2 VIOS 2.2.x The following fileset levels (VRMF) are vulnerable, if the respective IBM Tivoli Directory Server (ITDS) or IBM Security Directory Server (ISDS) version is installed: For ITDS 6.2.0: Less than 6.2.0.56 For ITDS 6.3.0: Less than 6.3.0.49 For ISDS 6.3.0: Less than 6.3.1.24 For ISDS 6.3.0: Less than 6.4.0.16 Note: To find out whether the affected ITDS or ISDS filesets are installed on your systems, refer to the lslpp command found in AIX user's guide. Example: lslpp -L | grep -i itds Remediation/Fixes Note: Recommended remediation is to always install the most recent package available for the respective IBM Tivoli Directory Server or IBM Security Directory Server version. IBM Tivoli Directory Server 6.2.0, 6.2.0.56 or later: https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Security+Systems&product=ibm/Tivoli/Tivoli+Directory+Server&release=6.2.0.52&platform=AIX&function=all IBM Tivoli Directory Server 6.3.0, 6.3.0.49 or later: https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Security+Systems&product=ibm/Tivoli/Tivoli+Directory+Server&release=6.3.0.45&platform=AIX&function=all IBM Security Directory Server 6.3.1, 6.3.1.24 or later: https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Security+Systems&product=ibm/Tivoli/IBM+Security+Directory+Server&release=6.3.1.20&platform=AIX&function=all IBM Security Directory Server 6.4.0, 6.4.0.16 or later: https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Security+Systems&product=ibm/Tivoli/IBM+Security+Directory+Server&release=6.4.0.11&platform=AIX&function=all Workarounds and Mitigations None. Reference Complete CVSS v3 Guide On-line Calculator v3 Related Information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog AIX Security Bulletin (ASCII format) Acknowledgement None. *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. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXBcdQ2aOgq3Tt24GAQh6Hw//Q1ApEpN1H7gNE8BAlTIjwcq3Wi75FDHa Fa7Lxmjfk9GBF+ppvI6wZbFbzBMnySMo5WjVxJwW0aWoNHBT7McpmepIVslF4mGN FK8Cjdb+fXJpmodiUnuF5H8DkHu6ASBKlEmVHTSaTdeD/akiJeATrlenrmrYlG6Q AqoxJ3PF2TlJg1WuBUcWb91aCf+jFQf/fHu8ZXp6DoUaucNRTA5+h+uVanjEc4Un itBIeQsYLAfhyGroQqxykhjRCup+0S/jdVBuzdLwjClVnAwskNOXomG1/09GBzGS Njq9BG0G7/JMT59wNLcnhTnckuSmwNy7nYhglfGAGljTr/enNsl5FEeyAYsM958o QuHEIU+7oBAJzcgyhggWdQbzb8CtFN6aS94Nr2tImRUUy/qUuAHiqFY/p2OGXi8W 5cmFoAwIvW2BzH56b9J/Myik9/DYXa6RD4PSGOmld1JQOwwRukLr/xyc7hakmpHw zD2ykv9vyONC+zdGIKEF95mgrcDn/J9DIP5J8yxQI37ThDKpxdnMONrx0Dz8KMcx k1nAtqs70EPzCGkGxJn+8kaghiOmXieAjlJKjAw9pZapQi9tB4AtDvMLdErQfnys B47sKVFCcsW7vU0bMKmH7lLAG/a8oyUVH3E7UFpMzAPA1NFcUhf+vdK23cLZLOMw FuKfgJq+InM= =B0u0 -----END PGP SIGNATURE-----