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Security Bulletin: Rational ClearCase affected by vulnerability in OpenSSL (CVE-2014-0076)

Security Bulletin


Summary

A security vulnerability has been discovered in OpenSSL. Some configurations of IBM Rational ClearCase may expose this vulnerability.

Vulnerability Details

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CVE-ID: CVE-2014-0076

Description: OpenSSL could allow a local attacker to obtain sensitive information, caused by an implementation error in ECDSA (Elliptic Curve Digital Signature Algorithm). An attacker could exploit this vulnerability to recover ECDSA nonces. This vulnerability can only be exploited locally, authentication is not required and the exploit is not complex. An exploit can only partially affect confidentiality, but not integrity or availability.

CVSS Base Score: 2.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/91990
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:N)

Affected Products and Versions

IBM Rational ClearCase versions:

  • 7.1.1 through 7.1.1.9
  • 7.1.2 through 7.1.2.13
  • 8.0 through 8.0.0.10
  • 8.0.1 through 8.0.1.3

Note: Versions earlier than 7.1.1 are not affected.

Not all deployments of ClearCase use OpenSSL in a way that is affected by these vulnerabilities.

Your configuration is vulnerable if all of the following are true:
  1. You communicate with a server that uses ECDSA server certificates and
  2. You use client certificates with ECDSA and
  3. Your use of ClearCase includes any of these configurations:
    • You use the base CC/CQ integration client on any platform, configured to use SSL to communicate with a ClearQuest server.
    • You use the UCM/CQ integration on UNIX/Linux clients, configured to use SSL to communicate with a ClearQuest server.
      Note: Windows clients using the UCM/CQ integration are not vulnerable.
    • You use the Change Management Integrations for base CC with CQ or RTC, or for UCM with CQ or RTC on UNIX/Linux clients, configured to use SSL to communicate with a ClearQuest or RTC server.
      Note: Windows clients using the CMI integration are not vulnerable.
    • You use ratlperl, ccperl, or cqperl to run your own perl scripts, and those scripts use ECDSA client certificates to open an SSL connection to a server that uses ECDSA certificates.

Notes:
  • If your server uses other certificate types, you are not vulnerable.
  • If you do not use client certificates, you are not vulnerable.

Remediation/Fixes

Apply an interim fix for your appropriate release of ClearCase.
These versions include OpenSSL 1.0.1g.

Affected Version
Fix
7.1.1.x
Upgrade to Rational ClearCase Fix Pack 13 (7.1.2.13) for 7.1.2 plus Interim fix 1 (7.1.2.13.01)

Note: 7.1.2.13 inter-operates with all 7.1.1.x systems, and can be installed in the same way as 7.1.1.x fix packs.

7.1.2.x
Install Rational ClearCase Fix Pack 13 (7.1.2.13) for 7.1.2 plus Interim fix 1 (7.1.2.13.01)
8.0.0.x
Install Rational ClearCase Fix Pack 10 (8.0.0.10) for 8.0 plus Interim fix 1 (8.0.0.10.01)
8.0.1.x
Install Rational ClearCase Fix Pack 3 (8.0.1.3) for 8.0.1 plus Interim fix 1 for (8.0.1.3.01)

Workarounds and Mitigations

You can avoid the issue as follows:

    1. Avoid using ECDSA certificates (client or server) until you apply the fixes.
    2. Disable your use of CC/CQ integrations with SSL using ECDSA until you apply the fixes.
    3. Avoid using ratlperl, cqperl, or ccperl for SSL operations with ECDSA until you apply the fixes.

Get Notified about Future Security Bulletins

References

Complete CVSS v2 Guide
On-line Calculator v2

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

None

Change History

22 April 2014: Original copy published
28 May 2014: Updated to state which version of OpenSSL is included in the fix

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Document information

More support for: Rational ClearCase
Perl: ratlperl

Software version: 7.1.1, 7.1.1.1, 7.1.1.2, 7.1.1.3, 7.1.1.4, 7.1.1.5, 7.1.1.6, 7.1.1.7, 7.1.1.8, 7.1.1.9, 7.1.2, 7.1.2.1, 7.1.2.2, 7.1.2.3, 7.1.2.4, 7.1.2.5, 7.1.2.6, 7.1.2.7, 7.1.2.8, 7.1.2.9, 7.1.2.10, 7.1.2.11, 7.1.2.12, 7.1.2.13, 8.0, 8.0.0.1, 8.0.0.2, 8.0.0.3, 8.0.0.4, 8.0.0.5, 8.0.0.6, 8.0.0.7, 8.0.0.8, 8.0.0.9, 8.0.0.10, 8.0.1, 8.0.1.1, 8.0.1.2, 8.0.1.3

Operating system(s): AIX, HP-UX, Linux, Solaris, Windows

Reference #: 1670401

Modified date: 28 May 2014