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             AUSCERT External Security Bulletin Redistribution

         Vulnerability in kernel affects Power Hardware Management
                         Console (CVE-2018-14633)
                                4 July 2019


        AusCERT Security Bulletin Summary

Product:           IBM Power HMC
Publisher:         IBM
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Denial of Service        -- Remote/Unauthenticated
                   Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-14633  

Reference:         ESB-2019.1800

Original Bulletin: 

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Vulnerability in kernel affects Power Hardware Management Console

Product:             Power HMC
Software version:    All Versions
Operating system(s): Platform Independent
Reference #:         0956425

Security Bulletin


Power Hardware Management Console is affected by security vulnerabilities in
the Linux Kernel. Power Hardware Management Console has addressed the
applicable CVE.

Vulnerability Details

CVEID: CVE-2018-14633
DESCRIPTION: A security flaw was found in the chap_server_compute_md5()
function in the ISCSI target code in the Linux kernel in a way an
authentication request from an ISCSI initiator is processed. An unauthenticated
remote attacker can cause a stack buffer overflow and smash up to 17 bytes of
the stack. The attack requires the iSCSI target to be enabled on the victim
host. Depending on how the target's code was built (i.e. depending on a
compiler, compile flags and hardware architecture) an attack may lead to a
system crash and thus to a denial-of-service or possibly to a non-authorized
access to data exported by an iSCSI target. Due to the nature of the flaw,
privilege escalation cannot be fully ruled out, although we believe it is
highly unlikely. Kernel versions 4.18.x, 4.14.x and 3.10.x are believed to be
CVSS Base Score: 7
CVSS Environmental Score*: Undefined
CVSS Vector: ( CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H )

Affected Products and Versions

Power HMC V8.7.0.0
Power HMC V9.1.930.0



The following fixes are available on IBM Fix Central at: http://www-933.ibm.com

|           Product            |           VRMF           |           APAR           |         Remediation/Fix          |
|          Power HMC           |     V8.8.7.1 SP3 ppc     |         MB04210          |             MH01824              |
|          Power HMC           |     V8.8.7.1 SP3 x86     |         MB04209          |             MH01823              |
|          Power HMC           |    V9.1.930.1 SP1 ppc    |         MB04213          |             MH01826              |
|          Power HMC           |    V9.1.930.0 SP1 x86    |         MB04212          |             MH01825              |

Workarounds and Mitigations


Change History

Initial Version: 19 June 2019

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