Security Bulletin: glibc getaddrinfo stack-based buffer overflow (CVE-2015-7547)

Security Bulletin

Summary

IBM SmartCloud Entry is vulnerable to a glic vulnerability, which allows a romote attacker overflow a buffer and cause the application to crash.

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 https://exchange.xforce.ibmcloud.com/vulnerabilities/110662 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 SmartCloud Entry 2.2.0 through 2.2.0.4 Appliance fix pack 4
IBM SmartCloud Entry 2.3.0 through 2.3.0.4 Appliance fix pack 4
IBM SmartCloud Entry 2.4.0 through 2.4.0.4 Appliance fix pack 4
IBM SmartCloud Entry 3.1.0 through 3.1.0.4 Appliance fix pack 18
IBM SmartCloud Entry 3.2.0 through 3.2.0.4 Appliance fix pack 18

Remediation/Fixes

Product	VRMF	APAR	Remediation/First Fix
IBM SmartCloud Entry	2.2	None	IBM SmartCloud Entry 2.2.0 Appliance fix pack 5: http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~Other%2Bsoftware&product=ibm/Other+software/IBM+Starter+Kit+for+Cloud&release=All&platform=All&function=fixId&fixids=2.2.0.4-IBM-SKC_APPL-FP005&includeSupersedes=0
IBM SmartCloud Entry	2.3	None	IBM SmartCloud Entry 2.3.0 Appliance fix pack 5: http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~Other%2Bsoftware&product=ibm/Other+software/IBM+SmartCloud+Entry&release=All&platform=All&function=fixId&fixids=+2.3.0.4-IBM-SCE_APPL-FP005+&includeSupersedes=0
IBM SmartCloud Entry	2.4	None	IBM SmartCloud Entry 2.4.0 Appliance fix pack 5: http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~Other%2Bsoftware&product=ibm/Other+software/IBM+SmartCloud+Entry&release=All&platform=All&function=fixId&fixids=+2.4.0.4-IBM-SCE_APPL-FP005+&includeSupersedes=0
IBM SmartCloud Entry	3.1	None	IBM SmartCloud Entry 3.1.0 Appliance fix pack 19: http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~Other%2Bsoftware&product=ibm/Other+software/IBM+SmartCloud+Entry&release=3.1.0&platform=All&function=fixId&fixids=+3.1.0.4-IBM-SCE_APPL-FP19+&includeSupersedes=0
IBM SmartCloud Entry	3.2	None	IBM SmartCloud Entry 3.2.0 Appliance fix pack 19: http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~Other%2Bsoftware&product=ibm/Other+software/IBM+SmartCloud+Entry&release=All&platform=All&function=fixId&fixids=+3.2.0.4-IBM-SCE_APPL-FP19+&includeSupersedes=0

Workarounds and Mitigations

None

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References

Complete CVSS v2 Guide
On-line Calculator v2

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

March 11, 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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Tips

Security Bulletin: glibc getaddrinfo stack-based buffer overflow (CVE-2015-7547)