Security Bulletin: Vulnerabilities in glibc affect Power Hardware Management Console (CVE-2015-7547, CVE-2014-9761, CVE-2015-8776, CVE-2015-8777, CVE-2015-8778, CVE-2015-8779)

Summary

glibc is used by Power Hardware Management Console (HMC). HMC has addressed the applicable CVEs.

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)

CVEID: CVE-2014-9761**
DESCRIPTION:** GNU C Library (glibc) is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the nan 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 https://exchange.xforce.ibmcloud.com/vulnerabilities/111085 for the 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)

CVEID: 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 https://exchange.xforce.ibmcloud.com/vulnerabilities/110675 for the 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)

CVEID: 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 https://exchange.xforce.ibmcloud.com/vulnerabilities/109775 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:N)

CVEID: 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 https://exchange.xforce.ibmcloud.com/vulnerabilities/111086 for the 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)

CVEID: 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 https://exchange.xforce.ibmcloud.com/vulnerabilities/111087 for the 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

Power HMC V7.9.0.0

The following versions are affected by only CVE-2015-7547
Power HMC V8.1.0.0
Power HMC V8.2.0.0
Power HMC V8.3.0.0
Power HMC V8.4.0.0

Remediation/Fixes

The following fixes are available on IBM Fix Central

Product

|

VRMF

|

APAR

|

Remediation/Fix

—|—|—|—

Power HMC

|

V7.7.9.0 SP3

|

MB03898

|

Apply eFix MH01610

Power HMC

|

V8.8.1.0 SP3

|

MB03933

|

Apply eFix MH01611

Power HMC

|

V8.8.2.0 SP2

|

MB03739

|

Apply eFix MH01607

Power HMC

|

V8.8.3.0 SP2

|

MB03979

|

Apply Service Pack 2 MH01584

Power HMC

|

V8.8.4.0

|

MB04001

|

Apply eFix MH01615

Workarounds and Mitigations

None