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Security Bulletin: Multiple Vulnerabilities in OpenSSL affect IBM i

Security Bulletin


Summary

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

Vulnerability Details

CVEID: CVE-2018-0739
DESCRIPTION: OpenSSL is vulnerable to a denial of service. By sending specially crafted ASN.1 data with a recursive definition, a remote attacker could exploit this vulnerability to consume excessive stack memory.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/140847 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2018-0733
DESCRIPTION: OpenSSL could allow a remote attacker to bypass security restrictions, caused by the failure to properly compare byte values by the PA-RISC CRYPTO_memcmp() function used on HP-UX PA-RISC targets. An attacker could exploit this vulnerability to forge messages, some of which may be authenticated.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/140849 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

Affected Products and Versions

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

Remediation/Fixes

The issue can be fixed by applying a PTF to IBM i.

Releases 7.1, 7.2 and 7.3 of IBM i are supported and will be fixed.

http://www-933.ibm.com/support/fixcentral/
The IBM i PTF numbers are:

Release 7.1 – SI67433
Release 7.2 & 7.3 – SI67434

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

None

Get Notified about Future Security Bulletins

References

Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

*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.


Cross reference information
Segment Product Component Platform Version Edition
Operating System IBM i 7.3
Operating System IBM i 7.2
Operating System IBM i 7.1

Document information

More support for: IBM i
Security

Software version: 7.1, 7.2, 7.3

Operating system(s): IBM i

Reference #: N1022561

Modified date: 25 April 2018


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