Security Bulletin: GNU C library (glibc) vulnerabilities affect IBM Integrated Management Module II (IMM2) for System x, Flex and BladeCenter systems (CVE-2015-8776 CVE-2015-8777 CVE-2015-8778 CVE-2015-8779)

Summary

GNU C library (glibc) vulnerabilities affect IBM Integrated Management Module II (IMM2) for System x, Flex and BladeCenter systems.

Vulnerability Details

Summary

GNU C library (glibc) vulnerabilities affect IBM Integrated Management Module II (IMM2) for System x, Flex and BladeCenter systems.

Vulnerability Details

CVE-ID: CVE-2015-8776

Description: GNU C Library (glibc) is vulnerable to a denial of service. By passing out-of-range time values to the strftime function, a remote attacker could exploit this vulnerability to cause a segmentation fault or obtain sensitive information.

CVSS Base Score: 6.5
CVSS Temporal Score: See <http://exchange.xforce.ibmcloud.com/vulnerabilities/110675&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L)

CVE-ID: CVE-2015-8777

Description: GNU C Library (glibc or libc6) could allow a local attacker to bypass security restrictions, caused by an error in elf/rtld.c. By using a zero value of the LD_POINTER_GUARD environment variable, an attacker could exploit this vulnerability to bypass access restrictions.

CVSS Base Score: 5.1
CVSS Temporal Score: See <http://exchange.xforce.ibmcloud.com/vulnerabilities/109775&gt; for 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:N)

CVE-ID: CVE-2015-8778

Description: GNU C Library (glibc) could allow a remote attacker to execute arbitrary code on the system, caused by an integer overflow in hcreate and hcreate_r. An attacker could exploit this vulnerability to trigger an out-of-bound memory access and execute arbitrary code on the system or cause the application to crash.

CVSS Base Score: 5.6
CVSS Temporal Score: See <http://exchange.xforce.ibmcloud.com/vulnerabilities/111086&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L)

CVE-ID: CVE-2015-8779

Description: GNU C Library (glibc) is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the catopen function. By sending an overly long string, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.

CVSS Base Score: 5.6
CVSS Temporal Score: See <http://exchange.xforce.ibmcloud.com/vulnerabilities/111087&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L)

Affected products and versions

Remediation/Fixes

Firmware fix versions are available on Fix Central: <http://www.ibm.com/support/fixcentral/&gt;

Workarounds and Mitigations

None.

References

• Complete CVSS V3 Guide
• On-line Calculator V3

Related Information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

None.

Change History
02 August, 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

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.