ISC BIND is vulnerable to this security vulnerability. IBM i has addressed this vulnerability.
DESCRIPTION: ISC BIND is vulnerable to a denial of service, caused by a use-after-free when improperly sequencing cleanup operations on upstream recursion fetch contexts. A remote attacker could exploit this vulnerability to make named crash with an assertion failure.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/137694 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 6.1, 7.1, 7.2 and 7.3 of IBM i are affected.
The issue can be fixed by applying a PTF to IBM i.
Releases 6.1, 7.1, 7.2 and 7.3 of IBM i are supported and will be fixed.
The IBM i PTF numbers are:
Release 6.1 – SI66815
Release 7.1 – SI66814
Release 7.2 – SI66813
Release 7.3 – SI66812
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
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*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.
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
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18 December 2019