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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.2263.3 IBM Db2 is vulnerable to a denial of service attack (CVE-2020-4420) 8 December 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Db2 Publisher: IBM Operating System: AIX UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-4420 Original Bulletin: https://www.ibm.com/support/pages/node/6242362 Revision History: December 8 2020: Vendor added URLs for updates to advisory October 12 2020: Linux/Unix images updated for V9.7 July 1 2020: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- IBM(R) Db2(R) is vulnerable to a denial of service attack (CVE-2020-4420) Summary IBM(R) Db2(R) could allow an unauthenticated attacker to cause a denial of service due to a hang in the execution of a terminate command. Vulnerability Details CVEID: CVE-2020-4420 DESCRIPTION: IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow an unauthenticated attacker to cause a denial of service due a hang in the execution of a terminate command. CVSS Base score: 7.5 CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/ 180076 for the current score. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) Affected Products and Versions All fix pack levels of IBM Db2 V9.7, V10.1, V10.5, V11.1, and V11.5 editions on all platforms are affected. Remediation/Fixes Customers running any vulnerable fixpack level of an affected Program can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent fixpack level for each impacted release: V9.7 FP11, V10.1 FP6, V10.5 FP11, 11.1 FP5, and V11.5 GA. They can be applied to any affected fixpack level of the appropriate release to remediate this vulnerability. +-------+----------------+-------+--------------------------------------------+ |Release|Fixed in fix |APAR |Download URL | | |pack | | | +-------+----------------+-------+--------------------------------------------+ |V9.7 |TBD |IT32822|Special Build for V9.7 FP11: | | | | | | | | | |AIX 64-bit | | | | |HP-UX 64-bit | | | | |Linux 32-bit, x86-32 | | | | |Linux 64-bit, x86-64 | | | | |Linux 64-bit, POWER(TM) big endian | | | | |Linux 64-bit, System z(R), System z9(R) or | | | | |zSeries(R) | | | | |Solaris 64-bit, SPARC | | | | |Solaris 64-bit, x86-64 | | | | |Windows 32-bit, x86 | | | | |Windows 64-bit, x86 | | | | | | | | | | | +-------+----------------+-------+--------------------------------------------+ |V10.1 |TBD |IT32821|Special Build for V10.1 FP6: | | | | | | | | | |AIX 64-bit | | | | |HP-UX 64-bit | | | | |Linux 32-bit, x86-32 | | | | |Linux 64-bit, x86-64 | | | | |Linux 64-bit, POWER(TM) big endian | | | | |Linux 64-bit, System z(R), System z9(R) or | | | | |zSeries(R) | | | | |Solaris 64-bit, SPARC | | | | |Solaris 64-bit, x86-64 | | | | |Windows 32-bit, x86 | | | | |Windows 64-bit, x86 | +-------+----------------+-------+--------------------------------------------+ |V10.5 |TBD |IT32362|Special Build for V10.5 FP11: | | | | | | | | | |AIX 64-bit | | | | |HP-UX 64-bit | | | | |Linux 32-bit, x86-32 | | | | |Linux 64-bit, x86-64 | | | | |Linux 64-bit, POWER(TM) big endian | | | | |Linux 64-bit, POWER(TM) little endian | | | | |Linux 64-bit, System z(R), System z9(R) or | | | | |zSeries(R) | | | | |Solaris 64-bit, SPARC | | | | |Solaris 64-bit, x86-64 | | | | |Windows 32-bit, x86 | | | | |Windows 64-bit, x86 | | | | |Inspur | +-------+----------------+-------+--------------------------------------------+ |V11.1 |TBD |IT32287|Special Build for V11.1 FP5: | | | | | | | | | |AIX 64-bit | | | | |Linux 32-bit, x86-32 | | | | |Linux 64-bit, x86-64 | | | | |Linux 64-bit, POWER(TM) little endian | | | | |Linux 64-bit, System z(R), System z9(R) or | | | | |zSeries(R) | | | | |Solaris 64-bit, SPARC | | | | |Windows 32-bit, x86 | | | | |Windows 64-bit, x86 | +-------+----------------+-------+--------------------------------------------+ |V11.5 |TBD |IT32363|Build for V11.5.4 GA: | | | | | | | | | |https://www.ibm.com/support/pages/node/ | | | | |6241724 | +-------+----------------+-------+--------------------------------------------+ Workarounds and Mitigations None Acknowledgement Change History 7 December 2020: Windows 64-bit image for 9.7 updated 26 November 2020: Windows images for 9.7 updated 9 October 2020: Linux/Unix images for 9.7 refreshed 18 August 2020: Windows images for 9.7 refreshed 30 June 2020: Initial Publication *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: 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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