Security Bulletin: Vulnerabilities in OpenSSL and ReDoS vulnerability in semver module affect IBM® SDK for Node.js™ in IBM Bluemix (CVE-2016-2107, CVE-2016-2105, CVE-2015-8855)

Summary

OpenSSL vulnerabilities were disclosed on May 3, 2016 by the OpenSSL Project. OpenSSL is used by IBM SDK for Node.js. IBM SDK for Node.js has addressed the applicable CVEs. The “semver” module is vulnerable to regular expression denial of service (ReDoS) when extremely long version strings are parsed.

Vulnerability Details

CVEID: CVE-2016-2107 DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive information, caused by an error when the connection uses an AES CBC cipher and the server support AES-NI. A remote user with the ability to conduct a man-in-the-middle attack could exploit this vulnerability via the POODLE (Padding Oracle On Downgraded Legacy Encryption) attack to decrypt traffic.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/112854 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N)

CVEID: CVE-2016-2105 DESCRIPTION: OpenSSL is vulnerable to a heap-based buffer overflow, caused by improper bounds checking by the EVP_EncodeUpdate() function. By sending an overly long argument, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 5.6
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/112855 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:L)

CVEID: CVE-2015-8855**
DESCRIPTION:** The Node.js semver module is vulnerable to a denial of service, caused by an error in the regular expression implementation. An attacker could exploit this vulnerability using a regular expression to cause the application to hang.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/112562 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

Affected Products and Versions

CVE-2016-2107 affects IBM SDK for Node.js v1.1.1.0 and earlier releases.
All listed vulnerabilities affect IBM SDK for Node.js v1.2.0.11 and earlier releases.
All listed vulnerabilities affect IBM SDK for Node.js v4.4.3.0 and earlier releases.
All listed vulnerabilities affect IBM SDK for Node.js v6.0.0.0.
The corresponding open-source versions are v0.10.44, v0.12.13 and v4.4.3, respectively.

To check which version of the Node.js runtime runtime your Bluemix application is using, navigate to the “Files” menu item for your application through the Bluemix UI. In the “logs” directory, check the “staging_task.log”.

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

cf files <appname> logs/staging_task.log

Look for the following lines:

-----> IBM SDK for Node.js Buildpack _______

If the Node.js engine version is not v0.10.45, v0.12.14 or v4.4.4, your application may be vulnerable.

Remediation/Fixes

The fixes for these vulnerabilities are included in IBM SDK for Node.js v1.1.1.1, v1.2.0.12, v4.4.4.0 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”: “>=0.10.45”_
},
or _
“engines”: {
_ “node”: “>=0.12.14”
},
or _
“engines”: {
_ “node”: “>=4.4.4”
},

You will then need to restage (or re-push) your application using the IBM SDK for Node.js Buildpack v3.4.