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

2019-12-1814:26:38

www.ibm.com

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

JSON

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.