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AUSCERT External Security Bulletin Redistribution
ESB-2015.2697
Security Bulletin: Vulnerability in Open Source GNU glibc affects IBM OS
Images for Red Hat Linux Systems. (CVE-2013-7423)
27 October 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM OS Images for Red Hat Linux Systems
Publisher: IBM
Operating System: Linux variants
Impact/Access: Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2013-7423
Reference: ESB-2015.2377
ESB-2015.1760
ESB-2015.1725
ESB-2015.1704
ESB-2015.1099
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21969525
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Security Bulletin: Vulnerability in Open Source GNU glibc affects IBM OS
Images for Red Hat Linux Systems. (CVE-2013-7423)
Document information
More support for:
PureApplication System
Security
Software version:
1.1.0.4, 1.1.0.5, 2.0, 2.0.0.1, 2.1.0.0, 2.1.0.1, 2.1.0.2
Operating system(s):
Linux
Reference #:
1969525
Modified date:
2015-10-26
Security Bulletin
Summary
A vulnerability in Open Source GNU glibc affects IBM OS Images for Red
Hat Linux Systems.
Vulnerability Details
CVEID: CVE-2013-7423
DESCRIPTION: GNU glibc could allow a local attacker to obtain sensitive
information, caused by the writing of DNS queries to random file descriptors
under high load by the getaddrinfo() function. An attacker could exploit
this vulnerability to obtain sensitive information.
CVSS Base Score: 1.2
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/100647 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:H/Au:N/C:P/I:N/A:N)
Affected Products and Versions
IBM OS Image for Red Hat Linux Systems 2.0
IBM OS Image for Red Hat Linux Systems 2.0.0.1
IBM OS Image for Red Hat Linux Systems 2.0.0.2
IBM OS Image for Red Hat Linux Systems 2.0.0.3
IBM OS Image for Red Hat Linux Systems 2.0.0.4
IBM OS Image for Red Hat Linux Systems 2.1.0.0
IBM OS Image for Red Hat Linux Systems 2.1.0.1
IBM OS Image for Red Hat Linux Systems 2.1.0.2
Remediation/Fixes
The deployed Red Hat Linux-based virtual machines on IBM PureApplication
System types are affected. The solution is to apply the following emergency
fix to the deployed virtual machines.
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=PureSystems&product=ibm/WebSphere/PureApplication+System&release=2.0.0.1&platform=All&function=fixId&fixids=glibc_patch&includeSupersedes=0
1. Import the fix into the Emergency Fix catalogue.
2. For deployed instances, apply this emergency fix on the VM. The glibc
library on the IBM OS Image for Red Hat Linux Systems will be updated to
contain the fix.
3. Restart the deployed instance after the fix is applied.
Optionally, the operating system vendor provides a glibc fix. The fix can
be applied by running the command "yum update glibc" within the deployed
virtual machine to upgrade to the latest glibc version.
You should verify applying this fix does not cause any compatibility issues.
Workarounds and Mitigations
None
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References
Complete CVSS v2 Guide
On-line Calculator v2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Acknowledgement
None
Change History
26 October 2015: 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.
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.
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