Security Bulletin: IBM i is affected by networking BIND vulnerability CVE-2018-5743

Summary

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

Vulnerability Details

***CVEID:CVE-2018-5743 DESCRIPTION: ISC BIND is vulnerable to a denial of service, caused by a flaw when setting the TCP client quota using the tcp-clients option. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause the exhaustion of file descriptors.
CVSS Base Score: 7.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/160127&gt; for the current score
CVSS Environmental Score: Undefined
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

Releases 7.1, 7.2, 7.3, and 7.4 of IBM i are affected.

Remediation/Fixes

The issue can be fixed by applying a PTF to IBM i.
Releases 7.1, 7.2, 7.3, and 7.4 of IBM i are supported and will be fixed.

The IBM i PTF numbers are:
Release 7.1 – SI69882
Release 7.2 – SI69883
Release 7.3 – SI69885
Release 7.4 – SI69886

<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