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

Security Bulletin


Summary

ISC BIND is vulnerable to this security vulnerability. IBM i has addressed the vulnerability.

Vulnerability Details

CVEID: 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

References

Off

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.

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Document Information

Modified date:
18 December 2019

UID

ibm10967483