Security Bulletin: IBM Software Delivery and Lifecycle Patterns for the glibc vulnerabilities (CVE-2015-7547)

Created by Neeta Patke on Sun, 02/21/2016 - 22:15

Security Bulletin

Summary

IBM Software Delivery and Lifecycle Patterns requires client action for the glibc vulnerabilities.
The GNU C Library (glibc) is vulnerable to a heap-based buffer overflow, a local attacker could exploit this vulnerability to overflow a buffer and execute arbitrary code on the system with root privileges.
GNU C Library (glibc) is vulnerable to a stack-based buffer overflow. 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.

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 Software Delivery and Lifecycle Patterns 1.0 and 1.0.1

Remediation/Fixes

IBM strongly recommends you should contact Red Hat to obtain and install fixes for Red Hat Enterprise Linux 6.4.

Alternatively, if you have access to a Yum update repository, you may update the glibc library by using the command: yum update glibc

After the update is applied you need to reboot the system or restart all affected services.

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References

Complete CVSS v2 Guide
On-line Calculator v2

Complete CVSS v3 Guide
On-line Calculator v3

Off

*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: IBM Software Delivery and Lifecycle Patterns for the glibc vulnerabilities (CVE-2015-7547)