Security Bulletin
Summary
A vulnerability in Open Source GNU glibc affects IBM OS Images for Red Hat Linux Systems.
Vulnerability Details
CVEID: CVE-2015-5277
DESCRIPTION: GNU C Library (glibc) could allow a local attacker to gain elevated privileges on the system, caused by a heap corruption error in the nss_files backend for the Name Service Switch. An attacker could exploit this vulnerability to execute arbitrary code on the system with elevated privileges.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/108484 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
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
IBM OS Image for Red Hat Linux Systems 2.1.2.0
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.
https://www-945.ibm.com/support/fixcentral/swg/downloadFixes?parent=PureSystems&product=ibm/WebSphere/PureApplication+System&release=All&platform=All&function=fixId&fixids=glibc_patch_Feb_2016&includeRequisites=1&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.
Information regarding the Red Hat Enterprise Linux Life Cycle is available at Red Hat Enterprise Linux Security Patching for IBM OS images for Red Hat Linux.
Workarounds and Mitigations
None
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References
Acknowledgement
None
Change History
29 June 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.
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:
15 June 2018
UID
swg21986400