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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)

Security Bulletin


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
Power HMC
V8.8.1.0 SP3
MB03933
Power HMC
V8.8.2.0 SP2
MB03739
Power HMC
V8.8.3.0 SP2
MB03979
Power HMC
V8.8.4.0
MB04001

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Change History

13 July 2016: Added CVE-2014-9761, CVE-2015-8776, CVE-2015-8777, CVE-2015-8778, CVE-2015-8779 for V7.7.9 only.
16 March 2016: Corrected the V8.8.3 PTF and APAR numbers
15 March 2016: First publish

*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:
22 September 2021

UID

nas8N1021171