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Security Bulletin: GNU C library (glibc) vulnerability affects IBM Security Access Manager for Mobile (CVE-2015-7547)

Security Bulletin


Summary

A GNU C library (glibc) stack-based buffer overflow in getaddrinfo() vulnerability affects IBM Security Access Manager for Mobile.

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 Security Access Manager for Mobile version 8, all firmware versions

IBM Security Access Manager for Mobile version 9, all firmware versions

Remediation/Fixes

The table below provides links to patches for all affected versions. Follow the installation instructions in the README file included with the patch.

Product VRMF APAR Remediation
IBM Security Access Manager for Mobile 8.0.0.0 -
8.0.1.3
IV81889 1. For 8.0-8.0.1.2 environments, upgrade to 8.0.1.3:
8.0.1-ISS-ISAM-FP0003
2. Apply 8.0.1.3 Interim Fix 5:
8.0.1.3-ISS-ISAM-IF0005
IBM Security Access Manager 9.0 IV81837 1. For 9.0 environments, upgrade to 9.0.0.1:
9.0.0-ISS-ISAM-FP0001
2. Apply 9.0.0.1 Interim Fix 2:
9.0.0.1-ISS-ISAM-IF0002

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.

IBM recommends that you review your entire environment to identify vulnerable releases of glibc including your Operating Systems and take appropriate mitigation and remediation actions. Please contact your Operating System provider for more information.

Workarounds and Mitigations

None.

Get Notified about Future Security Bulletins

References

Related information

Acknowledgement

None.

Change History

29 February 2016: Original version published.

*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

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Document information

More support for: IBM Security Access Manager for Mobile

Software version: 8.0, 8.0.0.1, 8.0.0.2, 8.0.0.3, 8.0.0.4, 8.0.0.5, 8.0.1, 8.0.1.2, 8.0.1.3, 9.0

Operating system(s): Platform Independent

Reference #: 1977372

Modified date: 01 March 2016