Security Bulletin: Vulnerability in OpenSSL affects IBM Rational ClearCase (CVE-2018-0732)

Summary

An OpenSSL vulnerability was disclosed on June 12 2018 by the OpenSSL Project. OpenSSL is used by IBM Rational ClearCase. IBM Rational ClearCase has addressed the applicable CVE.

Vulnerability Details

CVEID: CVE-2018-0732 DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by the sending of a very large prime value to the client by a malicious server during key agreement in a TLS handshake. By spending an unreasonably long period of time generating a key for this prime, a remote attacker could exploit this vulnerability to cause the client to hang.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/144658 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

IBM Rational ClearCase versions:

Version

|

Status

—|—

9.0.1 through 9.0.1.4

|

Affected

9.0 through 9.0.0.6

|

Affected

8.0.1 through 8.0.1.18

|

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 1.0.2p.

Affected Versions

|

Applying the fix

—|—

9.0.1 through 9.0.1.4
9.0 through 9.0.0.6

| Install Rational ClearCase Fix Pack 5 (9.0.1.5) for 9.0.1

8.0.1 through 8.0.1.18
8.0 through 8.0.0.21

| Install Rational ClearCase Fix Pack 19 (8.0.1.19) 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.