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Security Bulletin: Vulnerabilities in OpenSSL affect IBM Rational ClearCase (CVE-2015-3194, CVE-2015-3196, CVE-2016-0702)

Created by John T Kohl on
Published URL:
https://www.ibm.com/support/pages/node/541709
541709

Security Bulletin


Summary

OpenSSL vulnerabilities were disclosed on December 3, 2015 and March 1, 2016 by the OpenSSL Project. OpenSSL is used by IBM Rational ClearCase. IBM Rational ClearCase has addressed the applicable CVEs.

Vulnerability Details

CVEID: CVE-2015-3194
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by a NULL pointer dereference when verifying certificates via a malformed routine. An attacker could exploit this vulnerability using signature verification routines with an absent PSS parameter to cause any certificate verification operation to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/108503 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-2015-3196
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by a race condition when PSK identity hints are received by a multi-threaded client and the SSL_CTX structure is updated with the incorrect value. An attacker could exploit this vulnerability to possibly corrupt memory and cause a denial of service.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/108505 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-0702
DESCRIPTION: OpenSSL could allow a local attacker to obtain sensitive information, caused by a side-channel attack against a system based on the Intel Sandy-Bridge microarchitecture. An attacker could exploit this vulnerability to recover RSA keys.
CVSS Base Score: 2.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111144 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

IBM Rational ClearCase versions:

Version
Status
9.0
Affected only by CVE-2016-0702
8.0.1 through 8.0.1.10
Affected
8.0 through 8.0.0.17
Affected
7.1.0.x, 7.1.1.x (all versions)
7.1.2 through 7.1.2.18
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 Integrations for base ClearCase with ClearQuest or Rational Team Concert (RTC), or for UCM with ClearQuest or RTC, or for Jira, 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 1.0.1s.

Affected Versions
Applying the fix
9.0
Install Rational ClearCase Fix Pack 1 (9.0.0.01) for 9.0
8.0.1 through 8.0.1.10
Install Rational ClearCase Fix Pack 11 (8.0.1.11) for 8.0.1
8.0 through 8.0.0.17
Install Rational ClearCase Fix Pack 18 (8.0.0.18) for 8.0
7.1.2.x (all fix packs)
7.1.1.x (all fix packs)
7.1.0.x (all fix packs)
Customers on extended support contracts should contact Customer Support.

Note: A fix for CVE-2016-2108 was provided in OpenSSL version 1.0.1o and a fix for CVE-2015-3196 was provided in OpenSSL version 1.0.1p. Both issues were previously addressed by the fixes listed in Security Bulletin: Vulnerabilities in OpenSSL affect IBM Rational ClearCase (CVE-2015-1788, CVE-2015-1789, CVE-2015-1791).

For 7.0.x, 7.1.x and earlier releases, IBM recommends upgrading to a fixed, supported version/release/platform of the product.

Workarounds and Mitigations

None

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Important Note

IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk.

References

Complete CVSS v2 Guide
On-line Calculator v2

Complete CVSS v3 Guide
On-line Calculator v3

Off
OpenSSL Project vulnerability website

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

* 27 May 2016: 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.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Internal Use Only

PSIRT advisory 4367 (December 2015 OpenSSL updates) and PSIRT advisory 4896 (March 2016 OpenSSL updates)

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Document Information

Modified date:
10 July 2018

UID

swg21976611

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