Security Bulletin: Vulnerabilities in GSKit affect IBM Security Access Manager for Web (CVE-2015-0159, CVE-2015-0138, CVE-2014-6221)

Summary

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

Vulnerability Details

CVEID: CVE-2014-6221 **
DESCRIPTION:** Random Data Generation using GSKit MSCAPI/MSCNG Interface Code does not generate cryptographically random data. An attacker could use this weakness to gain complete confidentially and/or integrity compromise.

CVSS Base Score: 8.8
CVSS Temporal Score: See http://exchange.xforce.ibmcloud.com/#/vulnerabilities/98929 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:C/I:C/A:N)

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 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVEID: CVE-2015-0159

DESCRIPTION: An unspecified error in GSKit usage of OpenSSL crypto function related to the production of incorrect results on some platforms by Bignum squaring (BN_sqr) has an unknown attack vector and impact in some ECC operations.

CVSS Base Score: 2.6
CVSS Temporal Score: See http://exchange.xforce.ibmcloud.com/#/vulnerabilities/100835 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:H/Au:N/C:N/I:P/A:N)

Affected Products and Versions

• IBM Tivoli Access Manager for e-business 6.0, 6.1 and 6.1.1.
• IBM Security Access Manager for Web 7.0.
• IBM Security Access Manager for Web 8.0, firmware versions 8.0.0.2, 8.0.0.3, 8.0.0.4, 8.0.0.5, and 8.0.1.0.

Remediation/Fixes

The table below provides links to patches for all affected versions. Follow the installation instructions in the README file included with the patch.

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

For Tivoli Access Manager for e-business 5.1, IBM recommends upgrading to a fixed, supported release of the product.

Workarounds and Mitigations

For workaround and mitigation steps, see security bulletin:

Security Bulletin: Vulnerability in GSKit affects Tivoli Access Manager for e-business and Security Access Manager for Web (CVE-2015-0138)