Security Bulletin: Vulnerability in OpenSSL affects IBM Rational ClearCase (CVE-2019-1559)

Summary

An OpenSSL vulnerability was disclosed on February 26, 2019 by the OpenSSL Project. OpenSSL is used by IBM Rational ClearCase. IBM Rational ClearCase has addressed the applicable CVE.

Vulnerability Details

CVEID:CVE-2019-1559
Description: OpenSSL could allow a remote attacker to obtain sensitive information, caused by the failure to immediately close the TCP connection after the hosts encounter a zero-length record with valid padding. An attacker could exploit this vulnerability using a 0-byte record padding-oracle attack to decrypt traffic.
CVSS Base Score: 5.8
CVSS Temporal Score: <https://exchange.xforce.ibmcloud.com/vulnerabilities/157514&gt; for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N)

Affected Products and Versions

IBM Rational ClearCase versions:

Version

|

Status

—|—

9.0.1 through 9.0.1.7

|

Affected

9.0 through 9.0.0.6

|

Affected

8.0.1 through 8.0.1.21

|

Affected

8.0 through 8.0.0.21

|

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. On UNIX/Linux clients, you use the Change Management Integration (CMI), when configured to use SSL to communicate with the 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 as listed in the table below. The fix pack includes OpenSSL 1.0.2r.

Affected Versions

|

Applying the fix

—|—

9.0.1 through 9.0.1.7
9.0 through 9.0.0.6

| Install Rational ClearCase Fix Pack 7 (9.0.1.7) for 9.0.1

8.0.1 through 8.0.1.21
8.0 through 8.0.0.21

| Install Rational ClearCase Fix Pack 21 (8.0.1.21) for 8.0.1

For 8.0.x and earlier releases, IBM recommends upgrading to a fixed, supported version/release/platform of the product.

Workarounds and Mitigations

None.