Security Bulletin:GSKit vulnerable to FREAK - GSKit Ephemeral RSA Vulnerability

Summary

GSKit with accept an Ephemeral RSA Key for non export CipherSuites in SSLV3.0 and TLS 1.0

Vulnerability Details

CVE ID: CVE-2014-8730 **DESCRIPTION: *The SSL profiles component in F5 BIG-IP LTM, APM, and ASM 10.0.0 through 10.2.4 and 11.0.0 through 11.5.1, AAM 11.4.0 through 11.5.1, AFM 11.3.0 through 11.5.1, Analytics 11.0.0 through 11.5.1, Edge Gateway, WebAccelerator, and WOM 10.1.0 through 10.2.4 and 11.0.0 through 11.3.0, PEM 11.3.0 through 11.6.0, and PSM 10.0.0 through 10.2.4 and 11.0.0 through 11.4.1 and BIG-IQ Cloud and Security 4.0.0 through 4.4.0 and Device 4.2.0 through 4.4.0, when using TLS 1.x before TLS 1.2, does not properly check CBC padding bytes when terminating connections, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack, a variant of CVE-2014-3566 (aka POODLE). NOTE: the scope of this identifier is limited to the F5 implementation only. Other vulnerable implementations should receive their own CVE ID, since this is not a vulnerability within the design of TLS 1.x itself.
CVSS Base Score: 4.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/99216&gt; for the current score
CVSS Environmental Score: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N )

Affected Products and Versions

TXSeries for Multiplatforms V7.1, V8.1, V8.2

Remediation/Fixes

Install the lastest Special interim fix for GSKit from Fix Central. Follow the below procedure to get the GSKit Special Interim fix:

1. Type TXSeries for Multiplatforms as “Product selector”
2. Select your installed version of TXSeries , Platform and click continue.
3. Download the file with the description TXSeries-SpecialFix_GSKit_<Version> where Version is the currently available latest GSKIt fix for TXSeries product.
4. Download the file and follow the readme instruction.

Workarounds and Mitigations

For Clients only:

GSKit V7: None.

GSKit V8: Disable TLS 1.0 and lower.