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Security Bulletin: Vulnerabilities in ClearCase GSKit Component (CVE-2014-0076)

Security Bulletin


Summary

An attacker running a program on the same machine as where the victim is running a program could use CPU timing information to discover key information.

Vulnerability Details

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CVE ID: CVE-2014-0076

Description: An attacker running a program on the same machine as where the victim is running a program could use CPU timing information to discover key information about certain kinds of binary type Elliptic Curves used in Digital signatures during signing operations. Although GSKit only generates Prime type Elliptic Curves, externally generated keys may be imported in GSKit.

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

The IBM GSKit is used if ClearCase on Windows platforms is configured to integrate with IBM Rational ClearQuest with communication over SSL (https). This applies to Base CC/CQ integrations using Change Management Interface (CMI) and to UCM-enabled CQ integration via OSLC. If your ClearCase deployment is not using these integrations with ClearQuest, or not using SSL with the integrations, then your deployment is not sensitive to this attack. The UCM-enabled CQ integration without using OSLC (SQUID) is not sensitive to this attack.

The IBM GSKit is also used by CCRC WAN server for ClearCase 8.0.0.x/8.0.1.x (all platforms) when supporting SSL connections with IBM HTTP Server version 8 or higher.

CCRC WAN Server

CCRC WAN Server Version (all platforms)
Status
8.0.1.x
Affected
8.0.0.x
Affected if you use IBM HTTP Server version 8 or higher
7.0.x, 7.1.0.x, 7.1.1.x, 7.1.2.x
Not affected


CMI and OSLC integrations

ClearCase Windows Client Version
Status
8.0.1 through 8.0.1.3
Affected if you use CMI or OSLC integrations
8.0 through 8.0.0.10
Affected if you use CMI or OSLC integrations
7.1.2 through 7.1.2.13
Affected if you use CMI or OSLC integrations
7.0.x, 7.1.0.x, 7.1.1.x
Not affected

Remediation/Fixes

The solution is to upgrade to a fix pack of ClearCase that has a newer GSKit component that corrects these vulnerabilities, and to update the IBM HTTP Server. Please see below for information on the fixes available.

Affected Versions
Applying the fix to Windows clients using an integration
8.0.1.x
Install Rational ClearCase Fix Pack 4 (8.0.1.4) for 8.0.1
8.0.0.x
Install Rational ClearCase Fix Pack 11 (8.0.0.11) for 8.0
7.1.2.x
Install Rational ClearCase Fix Pack 14 (7.1.2.14) for 7.1.2
Server fixes (for CCRC WAN server):

Install a fix to IBM HTTP Server if you use SSL on your WAN server and you use IBM HTTP Server version 8 or higher. You need the fix for APAR PI19700. Consult IHS security bulletin 1676092 for the details of the fix.

Workarounds and Mitigations

None

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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

* 24 June 2014: Original copy published

*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
CCRC WAN Server

Software version: 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 #: 1672608

Modified date: 25 June 2014