Security Bulletin: Buffer Overflow vulnerability affects IBM i Access for Windows Personal Communications support (CVE-2015-0114)

Security Bulletin

Summary

Buffer Overflow affects product IBM i Access for Windows, 5770-XE1, Personal Communications Support.

Vulnerability Details

CVEID: CVE-2015-0114
DESCRIPTION: IBM Access for Windows is vulnerable to a stack-based buffer overflow, caused by improper bounds checking. A local attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 4.6
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/99886 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:L/Au:N/C:P/I:P/A:P)

Affected Products and Versions

Releases V5R4, 6.1 and 7.1 of IBM i Access for Windows are affected.

Remediation/Fixes

The issue can be fixed by applying a fix to IBM i Access for Windows.

The IBM i Access for Windows, 5770-XE1, product will be fixed via the 7.1 service release which can be used to access all supported releases of the IBM i server.

The interim fix, prior to the service release, can be obtained via this link:

Product 5770-XE1

Instructions to apply the fix are available in the readme.txt packed with the DLL.

SP11:

ftp://public.dhe.ibm.com/as400/products/clientaccess/win32/v7r1m0/files/pc5250/CVE20150114/

Important note: IBM recommends that all users running unsupported versions of affected products upgrade to supported and fixed version of affected products.

Workarounds and Mitigations

N/A

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References

Complete CVSS v2 Guide
On-line Calculator v2

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Acknowledgement

Fernando Muñoz, from the NULL group

*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: Buffer Overflow vulnerability affects IBM i Access for Windows Personal Communications support (CVE-2015-0114)