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Security Bulletin: GNU C library (glibc) vulnerability affects IBM XIV Storage System (CVE-2015-7547)

Security Bulletin


A GNU C library (glibc) stack-based buffer overflow in getaddrinfo() vulnerability affects IBM XIV Storage System.

Vulnerability Details

CVEID: CVE-2015-7547
DESCRIPTION: GNU C Library (glibc) is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the nss_dns backend for the getaddrinfo() function when performing dual A/AAAA DNS queries. By sending a specially crafted DNS response, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 8.1
CVSS Temporal Score: See for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

IBM XIV Gen3 systems running microcode versions 11.0 or later are affected.


The vulnerability has been addressed in releases 11.6.1.a and 11.5.2.a.
For other affected IBM XIV Gen3 versions, IBM recommends upgrading to a fixed, supported version/release/platform of the product.

As per the usual IBM XIV Gen3 microcode update process, please contact IBM Support to obtain the fix and to obtain assistance with updating the product.

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Change History

4 March 2016: Original Version Published

*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.


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.

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Document Information

Modified date:
17 June 2018