Security Bulletin: Multiple vulnerabilities in OpenSSL affect Rational ClearCase (CVE-2014-5139, CVE-2014-3509, CVE-2014-3511)

Summary

There are multiple vulnerabilities in OpenSSL that is used by affect Rational ClearCase. These issues were disclosed on August 6, 2014 by the OpenSSL Project.

Vulnerability Details

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CVE-ID: CVE-2014-5139

Description: OpenSSL is vulnerable to a denial of service, caused by a NULL pointer dereference when an SRP ciphersuite is specified without being properly negotiated with the client. A remote attacker could exploit this vulnerability to cause the client to crash.

CVSS Base Score: 5 **CVSS Temporal Score:**See _<https://exchange.xforce.ibmcloud.com/vulnerabilities/95166&gt;_ for more information *CVSS Environmental Score:**Undefined **CVSS Vector: **(AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVE-ID: CVE-2014-3511

Description: OpenSSL could allow a remote attacker to bypass security restrictions, caused by the negotiation of TLS 1.0 instead of higher protocol versions by the OpenSSL SSL/TLS server code when handling a badly fragmented ClientHello message. An attacker could exploit this vulnerability using man-in-the-middle techniques to force a downgrade to TLS 1.0.

CVSS Base Score: 4.3 **CVSS Temporal Score:**See <https://exchange.xforce.ibmcloud.com/vulnerabilities/95162&gt; for more information *CVSS Environmental Score:**Undefined CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVE-ID: CVE-2014-3509

Description: OpenSSL is vulnerable to a denial of service, caused by a race condition in the ssl_parse_serverhello_tlsext() code. If a multithreaded client connects to a malicious server using a resumed session, a remote attacker could exploit this vulnerability to cause a denial of service.

CVSS Base Score: 4.3 **CVSS Temporal Score:**See _<https://exchange.xforce.ibmcloud.com/vulnerabilities/95159&gt;_ for more information *CVSS Environmental Score:**Undefined CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:P)

Affected Products and Versions

IBM Rational ClearCase versions:

Version

|

Status

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8.0.1 through 8.0.1.5

|

Affected

8.0 through 8.0.0.12

|

Affected

7.1.0.x, 7.1.1.x, 7.1.2.x (all versions)

|

Affected

7.0.x

|

Not affected

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

You are vulnerable if your use of Rational ClearCase includes any of these configurations:

1. You use the base ClearCase/ClearQuest integration client on any platform, configured to use SSL to communicate with a ClearQuest server.

2. You use the UCM/ClearQuest integration on UNIX/Linux clients, configured to use SSL to communicate with a ClearQuest server.
   Note: Windows clients using the UCM/ClearQuest integration are not vulnerable.

3. You use the Change Management Integrations for base ClearCase with ClearQuest or Rational Team Concert (RTC), or for UCM with ClearQuest 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.

4. You use ratlperl, ccperl, or cqperl to run your own perl scripts, and those scripts use SSL connections.

Remediation/Fixes

Apply a fix pack for your appropriate release of ClearCase. These fix packs include OpenSSL 1.0.1i.

Affected Versions

|

** Applying the fix**

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8.0.1.x

| Install Rational ClearCase Fix Pack 6 (8.0.1.6)

8.0.0.x

| Install Rational ClearCase Fix Pack 13 (8.0.0.13)

7.1.2.x
7.1.1.x
7.1.0.x

| Customers with extended support contracts should install Rational ClearCase Fix Pack 16 (7.1.2.16)

Workarounds and Mitigations

Disable the ClearCase/ClearQuest integration and any customized defined use of ratlperl, ccperl, or cqperl with SSL until you apply the fixes listed above.