Security Bulletin: Security vulnerabilities identified in OpenSSL affect Rational Build Forge (CVE-2018-0734, CVE-2018-5407 and CVE-2019-1559)

Summary

OpenSSL has security vulnerabilities that allows a remote attacker to exploit the application. Respective security vulnerabilities are discussed in detail in the subsequent sections.

Vulnerability Details

This section includes the vulnerability details that affects the Rational Build Forge.

CVEID: CVE-2018-0734
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by a timing side channel attack in the DSA signature algorithm. An attacker could exploit this vulnerability using variations in the signing algorithm to recover the private key. CVSS Base Score: 3.7 CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/152085&gt; 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:N/A:N)

CVEID: CVE-2018-5407
DESCRIPTION: Multiple SMT/Hyper-Threading architectures and processors could allow a local attacker to obtain sensitive information, caused by execution engine sharing on Simultaneous Multithreading (SMT) architecture. By using the PortSmash new side-channel attack, an attacker could run a malicious process next to legitimate processes using the architecture’s parallel thread running capabilities to leak encrypted data from the CPU’s internal processes.

NOTE: This vulnerability is known as PortSmash.

CVSS Base Score: 5.1 CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/152484&gt; for the current score. CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVE-ID:CVE-2019-1559
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by the failure to immediately close the TCP connection after the hosts encounter a zero-length record with valid padding. An attacker could exploit this vulnerability using a 0-byte record padding-oracle attack to decrypt traffic. **CVSS Base Score:**5.8 CVSS Temporal Score:<https://exchange.xforce.ibmcloud.com/vulnerabilities/157514&gt; for more information *CVSS Environmental Score: **Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N)

Affected Products and Versions

IBM Rational Build Forge from 8.0.0.10.

Remediation/Fixes

You must download the Fix pack specified in the following table and apply it.

Affected Supporting Product

|

Remediation/Fix

—|—

IBM Rational Build Forge 8.0.0.10

| Rational Build Forge 8.0.0.11 Download .

Workarounds and Mitigations

None.