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Security Bulletin: Multiple vulnerabilities in the IBM Java Runtime affect IBM Rational ClearCase (CVE-2020-27221, CVE-2020-14782, CVE-2020-2773, CVE-2020-14781)

Security Bulletin


Summary

There are vulnerabilities in the IBM® Runtime Environment Java™ Versions 7 and 8, which is used by IBM Rational ClearCase. These issues were disclosed as part of the IBM SDK, Java Technology Edition Quarterly CPU - Jan 2021 - Includes Oracle Jan 2021 CPU plus CVE-2020-27221, CVE-2020-14781 (deferred from Oracle Oct 2020 CPU for Java 8), CVE-2020-2773 (deferred from Oracle Apr 2020 CPU), CVE-2020-14782 (deferred from Oracle Oct 2020 CPU for Java 8)

Vulnerability Details

CVEID:   CVE-2020-14782
DESCRIPTION:   An unspecified vulnerability in Java SE related to the Libraries component could allow an unauthenticated attacker to cause no confidentiality impact, low integrity impact, and no availability impact.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/190100 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID:   CVE-2020-14781
DESCRIPTION:   An unspecified vulnerability in Java SE related to the JNDI component could allow an unauthenticated attacker to obtain sensitive information resulting in a low confidentiality impact using unknown attack vectors.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/190099 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID:   CVE-2020-27221
DESCRIPTION:   Eclipse OpenJ9 is vulnerable to a stack-based buffer overflow when the virtual machine or JNI natives are converting from UTF-8 characters to platform encoding. By sending an overly long string, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base score: 9.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/195353 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID:   CVE-2020-2773
DESCRIPTION:   An unspecified vulnerability in Java SE related to the Java SE Security component could allow an unauthenticated attacker to cause a denial of service resulting in a low availability impact using unknown attack vectors.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/179673 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

Affected Product(s)Version(s)
IBM Rational ClearCase8.0.0
IBM Rational ClearCase9.0
IBM Rational ClearCase9.0.1
IBM Rational ClearCase9.1
IBM Rational ClearCase9.0.2
IBM Rational ClearCase8.0.1

Remediation/Fixes

The solution is to install a fix that includes an updated Java™ Virtual Machine with fixes for the issues, and to apply fixes for WebSphere Application Server (WAS).

Client and server fixes

Apply the relevant fixes as listed in the table below.
Affected Versions
Applying the fix
9.1 through 9.1.0.1Install Rational ClearCase Fix Pack 1 (9.1.0.1) for 9.1
9.0.2 through 9.0.2.4
Install Rational ClearCase Fix Pack 4 (9.0.2.4) for 9.0.2
9.0.1 through 9.0.1.12
9.0 through 9.0.0.6
Install Rational ClearCase Fix Pack 12 (9.0.1.12) for 9.0.1

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

Notes:
If you use CCRC as an extension offering installed into an Eclipse shell (one not provided as part of a ClearCase release), or you use rcleartool or CMAPI using a Java™ Virtual Machine not supplied by IBM as part of Rational ClearCase, you should update the Java™ Virtual Machine that you use to include a fix for the above issues. Contact the supplier of your Java™ Virtual Machine and/or the supplier of your Eclipse shell.

CCRC WAN server fixes

Affected Versions
Applying the fix

9.0.0.x
9.0.1.x 
9.0.2.x 
9.1.0.x 

Apply the appropriate WebSphere Application Server fix directly to your CCRC WAN server host. No ClearCase-specific steps are necessary.
  1. Determine the WAS version used by your CCRC WAN server. Navigate to the CCRC profile directory (either the profile you specified when installing ClearCase, or <ccase-home>/common/ccrcprofile), then execute the script: bin/versionInfo.sh (UNIX) or bin\versionInfo.bat (Windows). The output includes a section "IBM WebSphere Application Server". Make note of the version listed in this section.
  2. Review the following WAS security bulletin:
    Security Bulletin: Multiple Vulnerabilities in IBM® Java SDK affect WebSphere Application Server January 2021 CPU
    and apply the latest available fix for the version of WAS used for CCRC WAN server.

Note: there may be newer security fixes for WebSphere Application Server. Follow the link below (in the section "Get Notified about Future Security Bulletins") to subscribe to WebSphere product support alerts for additional Java SDK fixes.

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

Change History

29 Jun 2021: Initial Publication

*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

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Document Location

Worldwide

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Document Information

Modified date:
29 June 2021

UID

ibm16463987