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Security Bulletin: IBM i is affected by networking BIND vulnerability CVE-2019-6471.

Description

## Summary ISC BIND is vulnerable to this security vulnerability. IBM i has addressed the vulnerability. ## Vulnerability Details **CVEID:** [CVE-2019-6471](<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6471>) **DESCRIPTION:** ISC BIND is vulnerable to a denial of service, caused by a REQUIRE assertion failure in dispatch.c when handling malformed packets. By sending specially-crafted packets, a remote attacker could exploit this vulnerability to cause named to exit and result in a denial of service condition. CVSS Base Score: 5.9 CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/162756> for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H) ## Affected Products and Versions Releases 7.4, 7.3, 7.2, and 7.1 of IBM i are affected. ## Remediation/Fixes The issue can be fixed by applying a PTF to IBM i. Releases 7.4, 7.3, 7.2, and 7.1 of IBM i are supported and will be fixed. The IBM i PTF numbers are: **Release 7.4 – SI70734 Release 7.3 – SI70733 Release 7.2 – SI70732 Release 7.1 – SI70723** <https://www-945.ibm.com/support/fixcentral/> **Important note: **_IBM recommends that all users running unsupported versions of affected products upgrade to supported and fixed version of affected products._ ## Workarounds and Mitigations None ## Get Notified about Future Security Bulletins Subscribe to [My Notifications](< http://www-01.ibm.com/software/support/einfo.html>) to be notified of important product support alerts like this. ### References [Complete CVSS v3 Guide](<http://www.first.org/cvss/user-guide> "Link resides outside of ibm.com" ) [On-line Calculator v3](<http://www.first.org/cvss/calculator/3.0> "Link resides outside of ibm.com" ) Off ## Related Information [IBM Secure Engineering Web Portal](<http://www.ibm.com/security/secure-engineering/bulletins.html>) [IBM Product Security Incident Response Blog](<http://www.ibm.com/blogs/psirt>) ## Change History 15 August 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. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions. [{"Type":"MASTER","Line of Business":{"code":"LOB57","label":"Power"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SWG60","label":"IBM i"},"Platform":[{"code":"PF012","label":"IBM i"}],"Version":"7.1.0"}]


Affected Software


CPE Name Name Version
IBM i 7.1.0

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