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             AUSCERT External Security Bulletin Redistribution

           Vulnerability CVE-2019-1543 in OpenSSL affects IBM i
                              30 August 2019


        AusCERT Security Bulletin Summary

Product:           IBM i
Publisher:         IBM
Operating System:  IBM i
Impact/Access:     Access Privileged Data         -- Remote/Unauthenticated
                   Provide Misleading Information -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-1543  

Reference:         ASB-2019.0206

Original Bulletin: 

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Vulnerability CVE-2019-1543 in OpenSSL affects IBM i

Product:             IBM i
Software version:    7.1, 7.2, 7.3, 7.4
Operating system(s): IBM i
Reference #:         0967487

Security Bulletin


OpenSSL is used by IBM i. IBM i has addressed the applicable CVE.

Vulnerability Details

CVEID: CVE-2019-1543
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive
information, caused by an error in the ChaCha20-Poly1305 AEAD cipher. By
sending a message encrypted using a reused overly long nonce, an attacker could
exploit this vulnerability to conduct serious confidentiality and integrity
CVSS Base Score: 4.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
157841 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)

Affected Products and Versions

Releases 7.1, 7.2, 7.3 and 7.4 of IBM i are affected.


The issue can be fixed by applying a PTF to IBM i. Releases 7.1, 7.2, 7.3 and
7.4 of IBM i are supported and will be fixed.

The IBM i PTF numbers are:
Release 7.1 - SI70818
Release 7.2, 7.3 & 7.4 - SI70819

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


Change History

28 August 2019: Original Version Published

        Cross reference information
 Product  Component Platform Version Edition
IBM i 7.2           IBM i    7.2
IBM i 7.3           IBM i    7.3
IBM i 7.1           IBM i    7.1
IBM i 7.4           IBM i    7.4

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