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Security Bulletin: Vulnerabilities in OpenSSL affect IBM® SDK for Node.js™ in IBM Cloud (CVE-2017-3736, CVE-2017-3737, CVE-2017-3738)

Security Bulletin


Summary

OpenSSL vulnerabilities were disclosed on November 2, 2017 and December 7, 2017 by the OpenSSL Project. OpenSSL is used by IBM SDK for Node.js. IBM SDK for Node.js has addressed the applicable CVEs.

Vulnerability Details

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 for more information
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)

CVEID: CVE-2017-3737
DESCRIPTION:
 OpenSSL could allow a remote attacker to bypass security restrictions, caused by a flaw in the \"error state\" mechanism when directly calling SSL_read() or SSL_write() for an SSL object after receiving a fatal error. An attacker could exploit this vulnerability to bypass the decryption or encryption process and perform unauthorized actions.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/136077 for more information
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 for more information
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)

Affected Products and Versions

These vulnerabilities affect IBM SDK for Node.js v4.8.6.0 and earlier releases.
These vulnerabilities affect IBM SDK for Node.js v6.12.0.0 and earlier releases.
These vulnerabilities affect IBM SDK for Node.js v8.9.0.0 and earlier releases.

You can also find this file through the command-line Cloud Foundry client by running the following command:

cf ssh <appname> -c cat staging_info.yml

Look for the following lines:
{"detected_buildpack":"SDK for Node.js(TM) (ibm-node.js-xxx, buildpack-v3.xxx)","start_command":"./vendor/initial_startup.rb"}

If the Node.js engine version is not at least v4.8.7 or v6.12.2 or v8.9.3 your application may be vulnerable.

Remediation/Fixes

The fixes for these vulnerabilities are included in IBM SDK for Node.js v4.8.7.0 and subsequent releases.
The fixes for these vulnerabilities are included in IBM SDK for Node.js v6.12.2.0 and subsequent releases.
The fixes for these vulnerabilities are included in IBM SDK for Node.js v8.9.3.0 and subsequent releases.

To upgrade to the latest version of the Node.js runtime, please specify the latest Node.js runtime in your package.json file for your application:

"engines": {
"node": ">=4.8.7"
},
or
"engines": {
"node": ">=6.12.2"
},
or
"engines": {
"node": ">=8.9.3"
},

You will then need to restage (or re-push) your application using the IBM SDK for Node.js Buildpack v3.17.

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

Change History

January 17 2017: Original version published

*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.

Document information

More support for: IBM SDK for Node.js for Bluemix

Software version: Version Independent

Operating system(s): Platform Independent

Reference #: 2012662

Modified date: 17 January 2018