ESB-2018.3803 - [Linux][Solaris][AIX] IBM Sterling Connect:Express for UNIX: Denial of service - Remote with user interaction 2018-12-07

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3803
                            IBM Sterling update
                              7 December 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM Sterling Connect:Express for UNIX
Publisher:         IBM
Operating System:  AIX
                   Linux variants
                   Solaris
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-0732  

Reference:         ESB-2018.2458
                   ESB-2018.2187
                   ESB-2018.1870
                   ESB-2018.1758

Original Bulletin: 
   https://www.ibm.com/support/docview.wss?uid=ibm10720267

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Security Bulletin: IBM Sterling Connect:Express for UNIX is Affected by an
OpenSSL Vulnerability (CVE-2018-0732)

Security Bulletin

Document information
Software version: All Versions
Operating system(s): AIX, Linux, Solaris
Reference #: 0720267
Modified date: 06 December 2018

Summary

Security vulnerability was disclosed on Jun 12, 2018 by the OpenSSL Project.
OpenSSl is used by IBM Sterling Connect:Express for UNIX. IBM Sterling
Connect:Express for UNIX has addressed the applicable CVE.

Vulnerability Details

CVE-ID: CVE-2018-0732
Description: During key agreement in a TLS handshake using a DH(E) based
ciphersuite a malicious server can send a very large prime value to the client.
This will cause the client to spend an unreasonably long period of time
generating a key for this prime resulting in a hang until the client has
finished. This could be exploited in a Denial Of Service attack.
CVSS Base Score: 3.7
CVSS Temporal Score: https://exchange.xforce.ibmcloud.com/vulnerabilities/
144658 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Affected Products and Versions

IBM Sterling Connect:Express for UNIX 1.5.0.15

  * All versions prior to 1.5.0.15 iFix 150-1509

Remediation/Fixes

+---------------------------------------------------------------------+
|  VRMF  |APAR|                 Remediation/First Fix                 |
|--------+----+-------------------------------------------------------|
|1.5.0.15|TBD |Apply 1.5.0.15 iFix 150-1509, available on Fix Central.|
+---------------------------------------------------------------------+

Workarounds and Mitigations

None

Change History

6 December 2018: Original document published

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