Security Bulletin: XML External Entity (XXE) vulnerabilities in ClearCase (CVE-2014-0931)

Security Bulletin

Summary

IBM Rational ClearCase is vulnerable to XML external entity attacks. These attacks could cause denial of service or be used to attack other servers accessible from a client or server.

Vulnerability Details

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CVE ID: CVE-2014-0931

Description: IBM Rational ClearCase is vulnerable to XML external entity attacks. A malicious server could provoke a client to access other servers. A malicious client could cause denial of service on a server, or cause the server to access other servers.

The vulnerable components are:

CCRC WAN Server / CM Server
Perl CC/CQ integration trigger scripts (clients)
CMAPI Java interface (clients)
ClearCase remote client
CMI and OSLC-based ClearQuest integrations (clients)

CVSS Base Score: 5.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/92263 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:N)

Affected Products and Versions

ClearCase version	Status
8.0.1 through 8.0.1.3	Affected
8.0 through 8.0.0.10	Affected
7.1.2 through 7.1.2.13	Affected
7.1.0.x, 7.1.1.x (all versions and fix packs)	Affected
7.0.x	Not affected

Remediation/Fixes

The solution is to upgrade to a newer fix pack of ClearCase.

Affected Versions	Applying the fix
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
7.1.1.x 7.1.0.x	Install Rational ClearCase Fix Pack 14 (7.1.2.14) for 7.1.2 Note: 7.1.2.14 inter-operates with all 7.1.1.x systems, and can be installed in the same way as 7.1.1.x fix packs.

Workarounds and Mitigations

Disable the Perl trigger based ClearCase/ClearQuest integration until you apply the fixes to clients. Disable the CMI and OSLC-based CQ integrations until you apply the fixes to clients.

Disable CCRC WAN server until you apply the fixes to servers.

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References

Complete CVSS v2 Guide
On-line Calculator v2

Off

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

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Internal Use Only

IBM20140326-1005-49 Advisory DB ID = 1600 record 34544

7.0.x systems are only vulnerable in the Perl-based trigger integration with CQ. No customers on support contracts use this integration.

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Tips

Security Bulletin: XML External Entity (XXE) vulnerabilities in ClearCase (CVE-2014-0931)