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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.3738 Security Bulletin: IBM Connect:Direct for UNIX is Vulnerable to a Privilege Escalation Attack via its C/C++ API 7 October 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM Sterling Connect:Direct for UNIX Publisher: IBM Operating System: UNIX variants (UNIX, Linux, OSX) Impact/Access: Increased Privileges -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-4529 Original Bulletin: https://www.ibm.com/support/pages/node/1074722 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: IBM Connect:Direct for UNIX is Vulnerable to a Privilege Escalation Attack via its C/C++ API Security Bulletin Document Information More support for: Sterling Connect:Direct for UNIX Software version: 4.2.0, 4.3.0, 6.0.0 Operating system(s): Platform Independent Reference #: 1074722 Modified date: 04 October 2019 Summary IBM Sterling Connect:Direct for UNIX could allow a user who is authorized for limited Connect:Direct privileges to attack through a custom application written using the Connect:Direct for UNIX C/C++ API by replacing the system implementation of getuid() with a malicious implementation and gain unauthorized privilege to access to the Connect:Direct for UNIX Server. Vulnerability Details CVEID: CVE-2019-4529 DESCRIPTION: IBM Sterling Connect:Direct for UNIX could allow an authenticated attacker to replace the system implementation of getuid() with a malicious implementation allowing the user to gain unauthorized access to the CD UNIX Server through a custom application written using the CD UNIX C/C++ API. CVSS Base Score: 7.5 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/ 165585 for the current score. CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) Affected Products and Versions IBM Sterling Connect:Direct for Unix 6.0.0 IBM Sterling Connect:Direct for Unix 4.3.0 IBM Sterling Connect:Direct for Unix 4.2.0 Remediation/Fixes +----------+---------+--------------------------------------------------------+ |V.R.M.F |APAR |Remediation/First Fix | +----------+---------+--------------------------------------------------------+ |6.0.0 |IT27957 |Apply 6.0.0.0.iFixTBD, available on Fix Central | +----------+---------+--------------------------------------------------------+ |4.3.0 |IT27957 |Apply 4.3.0.0.iFixTBD, available on Fix Central | +----------+---------+--------------------------------------------------------+ |4.2.0 |IT27957 |Apply 4.2.0.4.iFix122, available on Fix Central | +----------+---------+--------------------------------------------------------+ For versions previous to 4.2.0, IBM recommends upgrading to a fixed, supported version 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 Off Related Information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Change History 04 Oct 2019: 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. 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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: https://www.auscert.org.au/bulletins/ =========================================================================== 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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