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Security Bulletin: IBM i is affected by networking BIND vulnerabilities CVE-2015-5477 and CVE-2015-4620.

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

Related information

*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 7.2
Operating System IBM i 7.1
Operating System IBM i 6.1

Document information

More support for: IBM i
Security

Software version: 6.1.0, 7.1.0, 7.2.0

Operating system(s): IBM i

Reference #: N1020890

Modified date: 31 August 2015


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