Security Bulletin: Multiple vulnerabilities in OpenSSL affect IBM Workload Scheduler

Summary

OpenSSL vulnerabilities were disclosed by the OpenSSL Project. OpenSSL is used by IBM Workload Manager. IBM Workload Manager 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&gt; 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&gt; 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)

CVEID: CVE-2017-3738 DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by an overflow bug in the AVX2 Montgomery multiplication procedure used in exponentiation with 1024-bit moduli. An attacker could exploit this vulnerability to obtain information about the private key. Note: In order to exploit this vulnerability, the server would have to share the DH1024 private key among multiple clients, which is no longer an option since CVE-2016-0701.
CVSS Base Score: 3.1
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/136078&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2017-3737 DESCRIPTION: An unspecified vulnerability in multiple Oracle products could allow an unauthenticated attacker to cause low confidentiality impact, low integrity impact, and high availability impact.
CVSS Base Score: 5.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/136077&gt; 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)

CVEID: CVE-2017-3736 DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by a carry propagation flaw in the the x86_64 Montgomery squaring function bn_sqrx8x_internal(). An attacker with online access to an unpatched system could exploit this vulnerability to obtain information about the private key.
CVSS Base Score: 5.9
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/134397&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:H/I:N/A:N)

Affected Products and Versions

TWS uses OpenSSL only for secure communication between internal processes.
For Tivoli Workload Scheduler Distributed, TWS nodes are impacted by OpenSSL security exposures only if the TWS workstation has been defined with “securitylevel” set to on or enabled or force.
These security exposures do not apply to WebSphere Application Server but only to programs installed under <TWS home>/bin.
Tivoli Workload Scheduler Distributed 9.1.0 FP02 and earlier
Tivoli Workload Scheduler Distributed 9.2.0 FP02 and earlier
IBM Workload Scheduler Distributed 9.3.0 FP03 and earlier
IBM Workload Scheduler Distributed 9.4.0 FP03 and earlier

Remediation/Fixes

APAR IJ07385 has been opened to address the openssl vulnerabilities for Tivoli Workload Scheduler.
The following limited availability fixes for IJ07385 are available for download on FixCentral
9.1.0-TIV-TWS-FP0002-IJ07385
to be applied on top of Tivoli Workload Scheduler Distributed 9.1.0 FP02
9.3.0-TIV-TWS-FP0002-IJ07385
to be applied on top of Tivoli Workload Scheduler Distributed 9.3.0 FP03

APAR IJ07385 has been included in 9.2.0-TIV-TWS-FP0003 and 9.4.0-TIV-TWS-FP0004.
For these affected releases IJ07385, supersedes IJ00716, IV91052, IV85683, IV82641, IV71646, IV70763, IV66395, IV66398, IV62010, IV61392, IV75062.
For Unsupported releases IBM recommends upgrading to a fixed, supported release of the product.

Workarounds and Mitigations

None