This document provides installation instructions for Unified CCE 12.0(1) ES51. It also contains a list of Unified CCE issues resolved by this engineering special. Review all installation information before installing the product. Failure to install this engineering special as described can result in inconsistent Unified CCE behavior.
This document contains these sections:
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This Engineering special should be installed on the Router node and PG nodes on 12.0(1) to address the two defects specified in this document.
This Engineering special should be installed on the Router node and PG nodes on 12.0(1)
Version 12.0(1).
This section lists the Unified CCE components on which you can and cannot install this engineering special.
You can install Unified CCE 12.0(1) ES51 on these Unified CCE components:
Do not install this engineering special on the following components:
1. Stop the Router / PG services prior to installing this Engineering Special.
2. Run the Engineering special installer
3. Restart the Router / PG services after installation
Note: Remove patches in the reverse order of their installation. For example, if you installed patches 3, then 5, then 10 for a product, you must uninstall patches 10, 5, and 3, in that order, to remove the patches from that product.
This section provides a list of significant Unified CCE defects resolved by this engineering special. It contains these subsections:
Note: You can view more information on and track individual Unified CCE defects using the Cisco Bug Search tool, located at: https://bst.cloudapps.cisco.com/bugsearch/search?null.
This section lists caveats specifically resolved by Unified CCE 12.0(1) ES51.
Caveats in this section are ordered by UNIFIED CCE component, severity, and then identifier.
|
Identifier |
Severity |
Component |
Headline |
|
CSCvq16162 |
3 |
router |
Cisco Unified Contact Center Enterprise Denial of Service Vulnerability |
|
CSCvt36779 |
3 |
router |
CCE Business Hours May Not Work Following DST Change |
Caveats are ordered by severity then defect number.
Defect Number: CSCvq16162
Component: router
Severity: 3
Headline: Cisco Unified Contact Center Enterprise Denial of Service Vulnerability
Symptom: A vulnerability in the Live Data server of Cisco Unified Contact Center Enterprise could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability exists because the affected software improperly manages resources when processing inbound Live Data traffic. An attacker could exploit this vulnerability by sending multiple crafted Live Data packets to an affected device. A successful exploit could cause the affected device to run out of buffer resources, which could result in a stack overflow and cause the affected device to reload, resulting in a DoS condition. Note: The Live Data port in Cisco Unified Contact Center Enterprise devices allows only a single TCP connection. To exploit this vulnerability, an attacker would have to send crafted packets to an affected device before a legitimate Live Data client establishes a connection. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucce-tip-dos-7cdLUASb
Conditions: At the time of publication, this vulnerability affected Cisco Unified Contact Center Enterprise releases prior to the 12.5(1) software release. At the time of publication, Cisco Unified Contact Center Enterprise releases 12.5(1) and later contained the fix for this vulnerability.
Workaround: Please refer to the Security Advisory.
Further Problem Description: Please refer to the Security Advisory. PSIRT Evaluation: The Cisco PSIRT has assigned this bug the following CVSS version 3 score. The Base CVSS score as of the time of evaluation is 6.8: https://tools.cisco.com/security/center/cvssCalculator.x?vector=CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H CVE ID CVE-2020-3163 has been assigned to document this issue. Additional information on Cisco''s security vulnerability policy can be found at the following URL: http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html Getting the Patch: The following links take you to an emergency patch, called an Engineering Special or ES. These emergency patches are meant for deployments that are actively encountering a specific problem and cannot wait for a formal release to include a fix. An ES receives limited testing compared to a formal release. Installing an ES on a production system poses a risk of instability due to that limited testing. If you are not directly experiencing this problem, wait to install a major, minor, or maintenance release that includes the fix for this issue. If you experience this problem and cannot wait for a later formal release, select the ES that matches the base release of your deployment. The base release is the front part of the ES name. Only install an ES that matches the release that your deployment runs. Always read the release notes or Readme file before running the patch installer.
Defect Number: CSCvt36779
Component: router
Severity: 3
Headline: CCE Business Hours May Not Work Following DST Change
Symptom: Business Hours feature for UCCE/PCCE may stop working after a daylight savings time change.
Conditions: Following DST change.
Workaround: Change the Time Zone of the Windows server to any other TZ and save it, then change back to the original time zone and save.
Further Problem Description:
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