icu security update (RHSA-2020-0897)

Original Release Date: March 30, 2020
Last Revised: April 8, 2020
Number: ASA-2020-031
Overall Severity Classification: High
Advisory Version: 2.0
Advisory Status: Interim

1. Overview:

The International Components for Unicode (ICU) library provides robust and full-featured Unicode services.

Security Fix(es):

* ICU: Integer overflow in UnicodeString::doAppend() (CVE-2020-10531)

More information can be found in the security advisory issued by Red Hat:

2. Avaya System Products using a modified version of RHEL7 with affected packages installed:

For assessment and severity classification details refer to Section 3 of Avaya's Product Vulnerability Response Policy.
The "Resolution" column will be updated as fixes are made available. Please reference the "Information" column for any additional information regarding the affected product.

Product: Version(s): Resolution: Information:
Avaya Aura® Application Enablement Services 7.1.x, 8.x Pending See recommended actions below. This issue will be addressed in accordance with section five of Avaya's Product Security Vulnerability Response Policy.

The risk is mitigated because only libicu is installed for dependancy purposes.
Avaya Breeze™ Platform 3.3 and later Pending See recommended actions below. This issue will be addressed in accordance with section five of Avaya's Product Security Vulnerability Response Policy.

The risk is mitigated because only libicu is installed for dependancy purposes.
Avaya CMS R19.x Pending See recommended actions below. This issue will be addressed in accordance with section five of Avaya's Product Security Vulnerability Response Policy.

The risk is mitigated because only libicu is installed for dependancy purposes.
Avaya Aura® Communication Manager 7.1.x, 8.x Pending See recommended actions below. This issue will be addressed in accordance with section five of Avaya's Product Security Vulnerability Response Policy.

The risk is mitigated because only libicu is installed for dependancy purposes.
Avaya Aura® Device Services 8.x Pending See recommended actions below. This issue will be addressed in accordance with section five of Avaya's Product Security Vulnerability Response Policy.

The risk is mitigated because only libicu is installed for dependancy purposes.
Avaya Aura® Messaging 7.1.x Pending See recommended actions below. This issue will be addressed in accordance with section five of Avaya's Product Security Vulnerability Response Policy.

The risk is mitigated because only libicu is installed for dependancy purposes.
Avaya Session Border Controller for Enterprise 7.2.x, 8.x Pending See recommended actions below. This issue will be addressed in accordance with section five of Avaya's Product Security Vulnerability Response Policy.

An affected version of the package is installed, but the impact of the vulnerability has not been assessed.
Avaya Aura® Session Manager 7.1.x, 8.x Pending See recommended actions below. This issue will be addressed in accordance with section five of Avaya's Product Security Vulnerability Response Policy.

The risk is mitigated because only libicu is installed for dependancy purposes.
Avaya Aura® System Manager 7.1.x, 8.x Pending See recommended actions below. This issue will be addressed in accordance with section five of Avaya's Product Security Vulnerability Response Policy.

The risk is mitigated because only libicu is installed for dependancy purposes.
Avaya Aura® Utility Services 7.1.x Pending See recommended actions below. This issue will be addressed in accordance with section five of Avaya's Product Security Vulnerability Response Policy.

The risk is mitigated because only libicu is installed for dependancy purposes.

Recommended Actions for Products:
Avaya strongly recommends following networking and security best practices by implementing firewalls, ACLs, physical security or other appropriate access restrictions. Though Avaya believes such restrictions should always be in place, risk to Avaya products and the surrounding network from this potential vulnerability may be mitigated by ensuring these practices are implemented until such time as an Avaya provided product update or the recommended Avaya action is applied. Further restrictions as deemed necessary based on the customer's security policies may be required during this interim period, but the System Product operating system or application should not be modified unless the change is approved by Avaya. Making changes that are not approved may void the Avaya product service contract.

CVSS Scoring and Metrics:

Avaya uses the Common Vulnerability Scoring System (CVSS) base score and metrics as reported by the vendor for the affected component(s) or by the National Institute of Standards and Technology in the National Vulnerability Database. In some cases, such as where CVSS information is not available from the vendor or NIST, Avaya will calculate the CVSS base score and metrics. Customers are encouraged to calculate the Temporal and Environmental CVSS scores to determine how the vulnerability could affect their specific implementation or environment. For more information on CVSS and how the score is calculated, see Common Vulnerability Scoring System: Specification Document.

Vulnerability CVSSv3 Base Score CVSSv3 Metrics
CVE-2020-10531
8.8 (High) CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

3. Avaya Software-Only Products:

Avaya software-only products operate on general-purpose operating systems. Occasionally, vulnerabilities may be discovered in the underlying operating system or applications that come with the operating system. These vulnerabilities may not impact the software-only product directly but may threaten the integrity of the underlying platform.

Product: Actions:
Avaya Aura® Application Enablement Services Refer to PSN020361u - Avaya Aura® Software-only RPM updates prior to updating the package. Failure to do so, may result in a system breakage.
Avaya Aura® Communication Manager 8.0 and later Refer to PSN020361u - Avaya Aura® Software-only RPM updates prior to updating the package. Failure to do so, may result in a system breakage.
Oceanalytics Elite If an affected package is installed, Avaya recommends following the actions supplied by Red Hat.
Avaya Aura® Session Manager 8.0 and later Refer to PSN020361u - Avaya Aura® Software-only RPM updates prior to updating the package. Failure to do so, may result in a system breakage.
Avaya Aura® System Manager 8.0 and later Refer to PSN020361u - Avaya Aura® Software-only RPM updates prior to updating the package. Failure to do so, may result in a system breakage.
Avaya Aura® WebLM (Standalone) 8.0 and later Refer to PSN020361u - Avaya Aura® Software-only RPM updates prior to updating the package. Failure to do so, may result in a system breakage.

4. Additional Information:

Additional information may also be available via the Avaya support website and through your Avaya account representative. Please contact your Avaya product support representative, or dial 1-800-242-2121, with any questions.

5. Disclaimer:

ALL INFORMATION IS BELIEVED TO BE CORRECT AT THE TIME OF PUBLICATION, IS PROVIDED "AS IS", AND IS APPLICABLE ONLY TO PRODUCT VERSIONS ELIGIBLE FOR MANUFACTURER SUPPORT IN ACCORDANCE WITH AVAYA PRODUCT LIFE CYCLE POLICY. AVAYA INC., ON BEHALF ITSELF AND ITS SUBSIDIARIES AND AFFILIATES (HEREINAFTER COLLECTIVELY REFERRED TO AS "AVAYA"), DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND FURTHERMORE, AVAYA MAKES NO REPRESENTATIONS OR WARRANTIES THAT THE STEPS RECOMMENDED WILL ELIMINATE SECURITY OR VIRUS THREATS TO CUSTOMERS' SYSTEMS. IN NO EVENT SHALL AVAYA BE LIABLE FOR ANY DAMAGES WHATSOEVER ARISING OUT OF OR IN CONNECTION WITH THE INFORMATION OR RECOMMENDED ACTIONS PROVIDED HEREIN, INCLUDING DIRECT, INDIRECT, INCIDENTAL, STATUTORY, CONSEQUENTIAL DAMAGES, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF AVAYA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

THE INFORMATION PROVIDED HERE DOES NOT AFFECT THE SUPPORT AGREEMENTS IN PLACE FOR AVAYA PRODUCTS. SUPPORT FOR AVAYA PRODUCTS CONTINUES TO BE EXECUTED AS PER EXISTING AGREEMENTS WITH AVAYA.

6. Revision History:

V 1.0 - March 30, 2020 - Initial Statement issued.
V 2.0 - April 8, 2020 - Updated information section for listed products.

Avaya customers or Business Partners should report any security issues found with Avaya products via the standard support process.
Independent security researchers can contact Avaya at securityalerts@avaya.com.

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