Security Bulletin: Vulnerability in GNU C Library(glibc) affects WebSphere DataPower XC10 Appliance(CVE-2015-7547) - Revised fix available

Summary

A GNU C Library(glibc) vulnerability with a stack based overflow was addressed by WebSphere DataPower XC10 Appliance.

On Friday March 11th 2016, a fix was published to resolve this security vulnerability. However, that fix needed revision. A corrected fix is now available.

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

WebSphere DataPower XC10 Appliance versions 2.1 and 2.5 at all firmware levels.

Remediation/Fixes

Apply an interim fix, according to the table below.** **Interim fixes are associated with the original APAR that is documented in the table. Because these APAR references might be updated to more recent APARs, see the links in the table for the most recent interim fix information.