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AUSCERT External Security Bulletin Redistribution
ESB-2019.1382
IBM i is affected by networking BIND vulnerabilities
CVE-2018-5744 CVE-2019-6465 and CVE-2018-5745.
24 April 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM i
Publisher: IBM
Operating System: IBM i
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-6465 CVE-2018-5745 CVE-2018-5744
Reference: ESB-2019.0627
ESB-2019.0561.2
ESB-2019.0549
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=ibm10876698
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IBM i is affected by networking BIND vulnerabilities CVE-2018-5744
CVE-2019-6465 and CVE-2018-5745.
Product: IBM i
Software version: 7.1,7.2,7.3
Operating system(s): IBM i
Reference #: 0876698
Security Bulletin
Summary
ISC BIND is vulnerable to these security vulnerabilities. IBM i has addressed
these vulnerabilities.
Vulnerability Details
CVEID: CVE-2018-5745
DESCRIPTION: ISC BIND is vulnerable to a denial of service, caused by an error
in the managed-keys feature. By replacing a trust anchor''s keys with keys
which use an unsupported algorithm, a remote authenticated attacker could
exploit this vulnerability to cause an assertion failure.
CVSS Base Score: 4.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
157386 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2019-6465
DESCRIPTION: ISC BIND could allow a remote attacker to obtain sensitive
information, caused by the failure to properly apply controls for zone
transfers to Dynamically Loadable Zones (DLZs) if the zones are writable. An
attacker could exploit this vulnerability to request and receive a zone
transfer of a DLZ even when not permitted to do so by the allow-transfer ACL.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
157377 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-2018-5744
DESCRIPTION: ISC BIND is vulnerable to a denial of service, caused by a failure
to free memory when processing messages with a specific combination of EDNS
options. By sending a specially-crafted packet, a remote attacker could exploit
this vulnerability to exhaust all available memory resources.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
157371 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 and 7.3 of IBM i are affected.
Remediation/Fixes
The issue can be fixed by applying a PTF to IBM i.
Releases 7.1, 7.2 and 7.3 of IBM i are supported and will be fixed.
https://www-945.ibm.com/support/fixcentral/
The IBM i PTF numbers are:
Release 7.1 - SI69120
Release 7.2 - SI69118
Release 7.3 - SI69119
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
Change History
22 April 2019: Original Version Published
Cross reference information
Product Component Platform Version Edition
IBM i 7.1 IBM i 7.1
IBM i 7.2 IBM i 7.2
IBM i 7.3 IBM i 7.3
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