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

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&gt; 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/&gt;

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