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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3710 IBM Db2's RCAC rules are not being enforced by CTAS sub-select statements 29 November 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM Db2 Publisher: IBM Operating System: AIX HP-UX Solaris Linux variants Windows Impact/Access: Unauthorised Access -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-1857 Reference: ESB-2018.3484.2 Original Bulletin: https://www.ibm.com/support/docview.wss?uid=ibm10734059 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: IBM Db2's RCAC rules are not being enforced by CTAS sub-select statements (CVE-2018-1857). Document information More support for: DB2 for Linux, UNIX and Windows Software version: 11.1 Operating system(s): AIX, HP-UX, Linux, Solaris, Windows Software edition: Advanced Enterprise Server, Advanced Workgroup Server, Enterprise Server, Express, Express-C, Person Reference #: 0734059 Modified date: 28 November 2018 Security Bulletin Summary Db2's Row and Column Access Control (RCAC) rules are not being enforced when creating a table using AS (CTAS) sub-select statements. RCAC is not enforced when Db2 uses the 'WITH DATA' clause to select and insert data into the target table. Vulnerability Details CVEID: CVE-2018-1857 DESCRIPTION: IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow a user to bypass FGAC control and gain access to data they shouldn't be able to see. CVSS Base Score: 4.8 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/ 151155 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N) Affected Products and Versions All fix pack levels of IBM Db2 V11.1 editions on all platforms are affected. Remediation/Fixes The recommended solution is to apply the appropriate fix for this vulnerability. FIX: The fix for DB2 release V11.1 is in V11.1.4.4, available for download from Fix Central. +---------------+----------+----------+--------------------------------------------------------------------+ |Release |Fixed in |APAR |Download URL | | |fix pack | | | +---------------+----------+----------+--------------------------------------------------------------------+ |V11.1 |FP4 |IT26595 |http://www.ibm.com/support/docview.wss-uid=ibm10741687 | +---------------+----------+----------+--------------------------------------------------------------------+ 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 Change History November 5, 2018: Original version published. November 28, 2018: Updated 11.1 version with a link to 11.1.4.4 image. *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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBW/9bZmaOgq3Tt24GAQiy9Q//YUVVzk0kQgpG9xm19yM+wyENMA7i4+hD 5BQs5+jCa7hRa1HF5DFZDxTj8pDCs28blxPm9nMuHVomRq/XwnhYU1+5I+LaEsVS LGwQfD3qnuI3CUC8PFBtJnddfW8Ct4tyG2HNLlYInn7R/DwuuDuCg+ZJo8eMyO02 AKBxqqHOPW+GfjNTiMuRmuX9B4hXcMVH9Q1KbfIR7Xmg/AgtPFbAAiYqjXaxJ6FI ibverUzBoA30X3DYoRGe5okYVHgv467mG1eoK3S664nbiCqp64q73NzE/cCa6bBs 1PsjBfEYgWwrMNybVqnOT0HmdrcZpHhs2ANpcCLNJ9rFhQAKvxxf50QEYOUD9PlT vjAg3ywJ2PMKTy0XqEUAuqN4GyyApiebqRvANDB/ee0xxqkd6EFUrCpWOLacqmnk lsHpI6jjK/jyDnIROYm7c9TTNrGW5olYBcerJ6zuzLwcCqRP5cJhMMsYb3Z75Bst B/0wZJHD73Y3KM6PQk30Fd+EAnSZkZNFJZZ5EUby+GagcWEwrO1aKwUnZP8QYYe2 juI73kvSf1BfUDpLBVL9OVP5Ouc6VBC4kwXyHsft0y0t33IpQorIzkbLPrO/R7Uj bmH6fVYcclxzbv93gboKcmnYvFFhgRFE1tpY7maxx3wnoBrsXxmEcfmWdUTruZrp rXW3NRM9r8s= =+Z4C -----END PGP SIGNATURE-----