Security Bulletin
Summary
BM i is affected by several ISC BIND vulnerabilities.
Vulnerability Details
CVEID: CVE-2015-5477
DESCRIPTION: ISC BIND is vulnerable to a denial of service, caused by an error in the handling of TKEY queries. By sending specially-crafted packets, a remote attacker could exploit this vulnerability to cause a REQUIRE assertion failure.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/105120 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector:(AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2015-4620
DESCRIPTION: ISC BIND is vulnerable to a denial of service, caused by an error during DNSSEC validation by a recursive resolver. By sending specially-crafted zone data, a remote attacker could exploit this vulnerability to cause the recursive resolver to crash.
CVSS Base Score: 7.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104434 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Affected Products and Versions
Releases 6.1, 7.1 and 7.2 of IBM i are affected.
Remediation/Fixes
The issue can be fixed by applying a PTF to the IBM i Operating System.
Releases 6.1, 7.1 and 7.2 of IBM i are supported and will be fixed.
Release 6.1 – SI57657
Release 7.1 – SI57654
Release 7.2 – SI57655
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 known
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References
*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
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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Document Information
Modified date:
18 December 2019
UID
nas8N1020890