Security Bulletin: GNU C library (glibc) vulnerability affects IBM MobileFirst Quality Assurance (CVE-2015-7547)

Summary

A GNU C library (glibc) stack-based buffer overflow in getaddrinfo() vulnerability affects IBM MobileFirst Quality Assurance.

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&gt; 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 MobileFirst Quality Assurance: 6.0.0 - 6.3.0.3

Remediation/Fixes

Product

| VRMF|APAR|Remediation/First Fix
—|—|—|—
IBM MobileFirst Quality Assurance| 6.0.0 – 6.3.0.3|
| fix pack: 1.0.0.6-Rational-WQARHU-fixpack
Operating system updates for MFQA, Version 1.0.0.6

Review the Updating topic in the IBM Knowledge Center for additional guidance.

Important: Take a snapshot of the VM before applying these updates.

Procedure:

1. Log in as root.

2. Change to the /opt/IBM/InstallationManager/eclipse/tools directory.

3. Start IBM Installation Manager in console mode by entering the following command: `
   ./imcl –c

`Installation Manager starts in console mode.

4. Select option P. Preferences.

5. Select option 1. Repositories.

6. Select option D. Add Repository.

7. Enter the following repository URL to update Red Hat Enterprise Linux:
   https://www.ibm.com/software/repositorymanager/service/com.ibm.rational…

8. Enter your IBM ID credentials:
   1. Select option P. Provide credentials and connect.
   2. Enter your user name.
   3. Enter your password.
   4. (Optional) Enter 1 to save your credentials.

9. Select option A. Apply changes and return to Preferences menu.

10. Select option R. Return to Main Menu.

11. From the list of actions, select 2. Update.

12. Select the 1. IBM MobileFirst Platform package group.

13. Select N. Next.

14. Select only Operating system updates for MFQA 1.0.0.6.

15. Select **N. Next.

**
16. Follow the prompts to install the updates.

Once updates have been applied, any process using glibc will need to be restarted. Given that nearly all system processes use glibc, rebooting after upgrading is suggested.

Workarounds and Mitigations

None