IBM Rational ClearCase is vulnerable to XML entity expansion attacks. These attacks could cause a denial of service.
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CVE ID: CVE-2014-3090
Description: IBM Rational ClearCase is vulnerable to XML entity expansion attacks. A malicious server could exhaust process memory on a client. A malicious client could cause denial of service on a server.
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: 5.0
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/94256 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)
IBM Rational ClearCase is vulnerable to a denial of service, caused by the failure to properly detect recursion during entity expansion by the XML parser. A remote attacker could exploit this vulnerability using a specially crafted XML document containing a large number of nested entity references to consume all available memory resources.
Affected Products and Versions
8.0.1 through 184.108.40.206
8.0 through 220.127.116.11
7.1.2 through 18.104.22.168
7.1.0.x, 7.1.1.x (all versions and fix packs)
The solution is to upgrade to a newer fix pack of ClearCase.
Applying the fix
|Install Rational ClearCase Fix Pack 4 (22.214.171.124) for 8.0.1|
|Install Rational ClearCase Fix Pack 11 (126.96.36.199) for 8.0|
|Install Rational ClearCase Fix Pack 14 (188.8.131.52) for 7.1.2|
|Install Rational ClearCase Fix Pack 14 (184.108.40.206) for 7.1.2
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.
Get Notified about Future Security Bulletins
* 17 September 2014: Original version 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.
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.
Internal Use Only
- 7.0.x systems are only vulnerable in the Perl-based trigger integration with CQ. No customers on support contracts use this integration.
- PSIRT # 1841 Record # 39659
10 July 2018