Security Bulletin: Vulnerabilities in OpenSSL including Logjam affect Rational Insight (CVE-2015-4000, CVE-2015-1789, CVE-2015-1790, CVE-2015-1792)

Summary

OpenSSL vulnerabilities were disclosed on June 11, 2015 by the OpenSSL Project. This includes Logjam Attack on TLS connections using the Diffie-Hellman (DH) key exchange protocol (CVE-2015-4000). OpenSSL is used by Rational Insight. Rational Insight has addressed the applicable CVEs.

Vulnerability Details

CVEID: CVE-2015-4000**
DESCRIPTION:** The TLS protocol could allow a remote attacker to obtain sensitive information, caused by the failure to properly convey a DHE_EXPORT ciphersuite choice. An attacker could exploit this vulnerability using man-in-the-middle techniques to force a downgrade to 512-bit export-grade cipher. Successful exploitation could allow an attacker to recover the session key as well as modify the contents of the traffic. This vulnerability is commonly referred to as “Logjam”.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/103294 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)

CVEID: CVE-2015-1789 DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by an out-of-bounds read in X509_cmp_time. An attacker could exploit this vulnerability using a specially crafted certificate or CRL to trigger a segmentation fault.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/103779 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVEID: CVE-2015-1790 DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by the improper handling of missing inner EncryptedContent by the PKCS#7 parsing code. An attacker could exploit this vulnerability using specially crafted ASN.1-encoded PKCS#7 blobs with missing content to trigger a NULL pointer dereference.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/103780 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVEID: CVE-2015-1792 DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by an error when verifying a signedData message. An attacker could exploit this vulnerability using an unknown hash function OID to cause the application to enter into an infinite loop.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/103781 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

Rational Insight 1.1, 1.1.1, 1.1.1.1, 1.1.1.2, 1.1.1.3, 1.1.1.4, 1.1.1.5, 1.1.1.6 and 1.1.1.7

Remediation/Fixes

Apply the recommended fixes to all affected versions of Rational Insight.

Rational Insight 1.1

• Download the IBM Cognos Business Intelligence 10.1.1 Interim Fix 14 (Implemented by file 10.1.6305.508).
  Review technote 1679272: Install a Cognos Business Intelligence 10.1.1 fix package in Rational Insight 1.1 for detailed instructions.

Rational Insight 1.1.1, 1.1.1.1 and 1.1.1.2

• Download the IBM Cognos Business Intelligence 10.1.1 Interim Fix 14 (Implemented by file 10.1.6305.508).
  Read technote 1679281: Install a Cognos Business Intelligence 10.1.1 fix package in Rational Reporting for Development Intelligence 2.0.x and Rational Insight 1.1.1.x for the detailed instructions for patch application.

Rational Insight 1.1.1.3

• Download the IBM Cognos Business Intelligence 10.2.1 Interim Fix 12 (Implemented by file 10.2.5000.506).
  Review technote 1679283: Installing Cognos Business Intelligence 10.2.1.x fix pack in Rational Reporting for Development Intelligence 2.0.x/5.0.x and Rational Insight 1.1.1.x for the detailed instructions for patch application.

Rational Insight 1.1.1.4 and 1.1.1.5 and 1.1.1.6 and 1.1.1.7

• Download the IBM Cognos Business Intelligence 10.2.1.1 Interim Fix 11 (Implemented by file 10.2.5008.512).
  Review technote 1679283: Installing Cognos Business Intelligence 10.2.1.x fix pack in Rational Reporting for Development Intelligence 2.0.x/5.0.x and Rational Insight 1.1.1.x for the detailed instructions for patch application.

For CVE-2015-4000: You should verify applying this configuration change does not cause any compatibility issues. If you change the default setting after applying the fix, you will expose yourself to the attack described above. IBM recommends that you review your entire environment to identify other areas where you have enabled the Diffie-Hellman key-exchange protocol used in TLS and take appropriate mitigation and remediation actions.

Workarounds and Mitigations

None