Security Bulletin: Vulnerabilities in OpenSSL affect IBM Rational ClearCase (CVE-2016-7055, CVE-2017-3731)

Summary

OpenSSL vulnerabilities were disclosed on January 26, 2017 by the OpenSSL Project. OpenSSL is used by IBM Rational ClearCase. IBM Rational ClearCase has addressed the applicable CVEs.

Vulnerability Details

CVEID: CVE-2017-3731**
DESCRIPTION:** OpenSSL is vulnerable to a denial of service, caused by an out-of-bounds read when using a specific cipher. By sending specially crafted truncated packets, a remote attacker could exploit this vulnerability using CHACHA20/POLY1305 to cause the application to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/121312 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:L)

CVEID: CVE-2016-7055**
DESCRIPTION:** OpenSSL is vulnerable to a denial of service, caused by an error in a Broadwell-specific Montgomery multiplication procedure. By sending specially crafted data, a remote attacker could exploit this vulnerability to trigger errors in public-key operations in configurations where multiple remote clients select an affected EC algorithm and cause a denial of service.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/118748 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:L)

Affected Products and Versions

IBM Rational ClearCase versions:

Version

|

Status

—|—

9.0.1, 9.0.1.1

|

Not Affected

9.0 through 9.0.0.4

|

Affected

8.0.1 through 8.0.1.14

|

Affected

8.0 through 8.0.0.21

|

Affected

7.1.2 through 7.1.2.19 (all fix packs)

|

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 (ClearQuest or Rational Team Concert (RTC) or Jira).
   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 1.0.2k.

Affected Versions

|

** Applying the fix**

—|—

9.0 through 9.0.0.4

| Install Rational ClearCase Fix Pack 5 (9.0.0.5) for 9.0 or Rational ClearCase release 9.0.1

8.0.1 through 8.0.1.14
8.0 through 8.0.0.21

| Install Rational ClearCase Fix Pack 15 (8.0.1.15) for 8.0.1

7.1.2 through 7.1.2.19 (all fix packs)

| Customers should upgrade to a fixed, supported version/release of the product.
For 7.0, 7.1, 7.1.1 and earlier releases, IBM recommends upgrading to a fixed, supported version/release/platform of the product.

Workarounds and Mitigations

None