Security Bulletin: Vulnerability in GSKit affects IBM Security Network Protection (CVE-2015-0138)

Summary

GSKit is an IBM component that is used by IBM Security Network Protection. The GSKit that is shipped with IBM Security Network Protection contains multiple security vulnerabilities including the FREAK: Factoring Attack on RSA-EXPORT keys" TLS/SSL client and server vulnerability. IBM Security Network Protection has addressed the applicable CVEs.

Vulnerability Details

CVEID: CVE-2015-0138 **
DESCRIPTION:** A vulnerability in various IBM SSL/TLS implementations could allow a remote attacker to downgrade the security of certain SSL/TLS connections. An IBM SSL/TLS client implementation could accept the use of an RSA temporary key in a non-export RSA key exchange ciphersuite. This could allow a remote attacker using man-in-the-middle techniques to facilitate brute-force decryption of TLS/SSL traffic between vulnerable clients and servers.
This vulnerability is also known as the FREAK attack.

CVSS Base Score: 4.3
CVSS Temporal Score: See <http://exchange.xforce.ibmcloud.com/#/vulnerabilities/100691&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N)

Affected Products and Versions

• IBM Security Network Protection 5.2
• IBM Security Network Protection 5.3

Remediation/Fixes

Product

| Version|Remediation
—|—|—
IBM Security Network Protection| 5.2| 5.2.0.0-ISS-XGS-All-Models-Hotfix-FP0008
IBM Security Network Protection| 5.3| Firmware Update 5.3.0.5** **https://ibmss.flexnetoperations.com/

You should verify applying this fix does not cause any compatibility issues.

Workarounds and Mitigations

None