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Security Bulletin: IBM i is affected by networking BIND vulnerabilities (CVE-2017-3142 and CVE-2017-3143)

Security Bulletin


Summary

ISC BIND is vulnerable to several security vulnerabilities. IBM i has addressed these vulnerabilities.

Vulnerability Details

CVEID: CVE-2017-3142
DESCRIPTION: ISC BIND could allow a remote attacker to bypass security restrictions, caused by an error when an attacker can send and receive messages to an authoritative DNS server and has knowledge of a valid TSIG key name. By sending a specially crafted request packet, an attacker could exploit this vulnerability to bypass TSIG authentication on AXFR requests and transfer the target zone.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/127901 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2017-3143
DESCRIPTION: ISC BIND could allow a remote attacker to bypass security restrictions, caused by an error when an attacker can send and receive messages to an authoritative DNS server and has knowledge of a valid TSIG key name. By sending specially crafted data, an attacker could exploit this vulnerability to bypass TSIG authentication and manipulate BIND into accepting an unauthorized dynamic update.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/127902 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:H/A:N)

Affected Products and Versions

Releases 6.1, 7.1, 7.2 and 7.3 of IBM i are affected.

Remediation/Fixes

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.

http://www-933.ibm.com/support/fixcentral/
The IBM i PTF numbers are:

Release 6.1 – SI65339
Release 7.1 – SI65338
Release 7.2 – SI65337
Release 7.3 – SI65336

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

Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

*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.


Cross reference information
Segment Product Component Platform Version Edition
Operating System IBM i 7.3
Operating System IBM i 7.2
Operating System IBM i 7.1
Operating System IBM i 6.1

Document information

More support for: IBM i
Security

Software version: 6.1, 7.1, 7.2, 7.3

Operating system(s): IBM i

Reference #: N1022234

Modified date: 21 August 2017


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