Security Bulletin: Vulnerability in IBM Rational ClearCase (GSKit component) with potential for TLS Attack (CVE-2013-0169)

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Abstract

The IBM GSKit component used in Rational ClearCase is susceptible to a Transport Layer Security protocol (used in HTTPS) vulnerability known as "Lucky Thirteen." The vulnerability might allow remote attackers to conduct distinguishing and plain-text recovery attacks by statistically analyzing timing data for crafted packets.

Content

VULNERABILITY DETAILS

CVE ID: CVE-2013-0169

DESCRIPTION:
The IBM GSKit component used in Rational ClearCase is susceptible to a Transport Layer Security protocol (used in HTTPS) vulnerability known as "Lucky Thirteen." The vulnerability might allow remote attackers to conduct distinguishing and plain-text recovery attacks by statistically analyzing timing data for crafted packets.

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.

If your deployment does not use ClearCase on Windows, it is not sensitive to this attack.

CVSS Base Score: 4.3
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/81902 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)

AFFECTED PLATFORMS:
Rational ClearCase v7.1 through 7.1.2.11, v8.0 through 8.0.0.7, and v8.0.1

REMEDIATION:
The recommended solution is to upgrade the product to the latest version.

Fix:
Upgrade to one of the below versions of IBM Rational ClearCase



Work around:
None known; apply fix.

Mitigation:
None known; apply fix.

REFERENCES:
· Complete CVSS Guide
· On-line Calculator V2

RELATED INFORMATION:
· IBM Secure Engineering Web Portal
· IBM Product Security Incident Response Blog

ACKNOWLEDGEMENT: None

CHANGE HISTORY:
Sept 16, 2013 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 References section of this Flash.

Note: 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.

Cross reference information
Segment Product Component Platform Version Edition
Software Development Rational ClearCase Integrations: IBM Windows 7.1.2, 7.1.2.1, 7.1.2.10, 7.1.2.11, 7.1.2.12, 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, 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, 8.0.1

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Document information


More support for:

Rational ClearCase
UCM: ClearQuest Integration

Software version:

7.1.2.8, 7.1.2.9, 7.1.2.10, 7.1.2.11, 7.1.2.12, 8.0.0.4, 8.0.0.5, 8.0.0.6, 8.0.0.7, 8.0.1

Operating system(s):

Windows

Reference #:

1648839

Modified date:

2013-09-23

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