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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.0130 Vulnerability in MD5 Signature and Hash Algorithm affects IBM Sterling Connect 18 January 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM Sterling Connect Publisher: IBM Operating System: Windows AIX HP-UX Linux variants Solaris Impact/Access: Access Privileged Data -- Remote/Unauthenticated Provide Misleading Information -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2015-7575 Reference: ESB-2016.0047 Original Bulletin: http://www.ibm.com/support/docview.wss?uid=swg21974461 http://www.ibm.com/support/docview.wss?uid=swg21974473 Comment: This bulletin contains two (2) IBM security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Vulnerability in MD5 Signature and Hash Algorithm affects IBM Sterling Connect:Direct for Microsoft Windows (CVE-2015-7575) Security Bulletin Document information More support for: Sterling Connect:Direct for Microsoft Windows Software version: 4.5, 4.5.01, 4.6 Operating system(s): Windows Reference #: 1974461 Modified date: 2016-01-15 Summary The MD5 "SLOTH" vulnerability on TLS 1.2 affects IBM Sterling Connect:Direct for Microsoft Windows. Vulnerability Details CVEID: CVE-2015-7575 DESCRIPTION: The TLS protocol could allow weaker than expected security caused by a collision attack when using the MD5 hash function for signing a ServerKeyExchange message during a TLS handshake. An attacker could exploit this vulnerability using man-in-the-middle techniques to impersonate a TLS server and obtain credentials. CVSS Base Score: 7.1 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109415 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N) Affected Products and Versions IBM Sterling Connect:Direct for Microsoft Windows 4.6.0 and earlier. Remediation/Fixes The issue had already been resolved in earlier fix packs/patches. IBM recommends to apply the latest maintenance. Product VRMF APAR Remediation/First Fix IBM Sterling Connect:Direct for Microsoft Windows 4.5.00 IT13124 Apply 4.5.00 patch 053, available on IWM IBM Sterling Connect:Direct for Microsoft Windows 4.5.01 IT13124 Apply 4.5.01 patch 019, available on IWM IBM Sterling Connect:Direct for Microsoft Windows 4.6.0 IT13124 Apply 4.6.0.4_iFix002, available on Fix Central For older versions/releases IBM recommends upgrading to a fixed, supported version/release of the product. Workarounds and Mitigations None Get Notified about Future Security Bulletins Subscribe to My Notifications to be notified of important product support alerts like this. Important note IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk. References Complete CVSS v3 Guide On-line Calculator v3 Related information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Acknowledgement Reported to IBM by Karthikeyan Bhargavan at INRIA in Paris, France. Change History 15 January 2016: Original Version 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. - ------------------------------------------------------------------------------ Security Bulletin: Vulnerability in MD5 Signature and Hash Algorithm affects IBM Sterling Connect:Express for UNIX (CVE-2015-7575) Security Bulletin Document information More support for: Sterling Connect:Express for UNIX Software version: 1.4, 1.5 Operating system(s): AIX, HP-UX, Linux, Solaris Reference #: 1974473 Modified date: 2016-01-15 Summary The MD5 SLOTH vulnerability on TLS 1.2 affects IBM Sterling Connect:Express for UNIX. Vulnerability Details CVEID: CVE-2015-7575 DESCRIPTION: The TLS protocol could allow weaker than expected security caused by a collision attack when using the MD5 hash function for signing a ServerKeyExchange message during a TLS handshake. An attacker could exploit this vulnerability using man-in-the-middle techniques to impersonate a TLS server and obtain credentials. CVSS Base Score: 7.1 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109415 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N) Affected Products and Versions IBM Sterling Connect:Express for UNIX 1.4.6 - - All versions prior to 1.4.6.1 iFix 146-112 IBM Sterling Connect:Express for UNIX 1.5.0.12 - - All versions prior to 1.5.0.12 iFix 150-1205 Remediation/Fixes The recommended solution is to apply the fix as soon as practical. Please see below for information about the available fixes VRMF Remediation 1.4.6 Please contact your local IBM Remote Technical Support Center to request Connect:Express 1.4.6.1 iFix 146-113 1.5.0.12 Apply 1.5.0.12 iFix 150-1206, available on Fix Central Workarounds and Mitigations None, fix must be applied. Get Notified about Future Security Bulletins Subscribe to My Notifications to be notified of important product support alerts like this. References Complete CVSS v3 Guide On-line Calculator v3 Related information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Acknowledgement Reported to IBM by Karthikeyan Bhargavan at INRIA in Paris, France Change History 15 January 2016: Original Version 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. - --------------------------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. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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