CVE-2023-20009: Cisco Security Advisory: Cisco Email Security Appliance and Cisco Secure Email and Web Manager Vulnerabilities

Cisco has released free software updates that address the vulnerabilities described in this advisory. Customers with service contracts that entitle them to regular software updates should obtain security fixes through their usual update channels.

Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.

The Cisco Support and Downloads page on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool.

When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page, to determine exposure and a complete upgrade solution.

In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.

Customers Without Service Contracts

Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.

Fixed Releases

Customers are advised to upgrade to an appropriate fixed software release as indicated in the following tables:

ESA

Cisco AsyncOS Software Release

First Fixed Release for CVE-2023-20009

First Fixed Release for CVE-2023-20075

Earlier than 12.5

Migrate to a fixed release.

Not vulnerable.

12.5

12.5.3-041

12.5.3-041

13.0

13.0.5-007

13.0.5-007

13.5

13.5.4-038

13.5.4-038

14.0

14.2.1-020

14.2.1-020

14.3

14.3.0-0321

14.3.0-0321

1. This release is for cloud-based products.

Secure Email and Web Manager

Cisco AsyncOS Software Release

First Fixed Release for CVE-2023-20009

Earlier than 12.8

Migrate to a fixed release.

12.8

12.8.1-021

13.8

13.8.1-108

14.0

14.2.0-224

14.31

14.3.0-1201

1. This release is for cloud-based products.

In most cases, the software can be upgraded over the network by using the System Upgrade options in the web interface of the appliance. To upgrade a device by using the web interface, do the following:

1. Choose System Administration > System Upgrade.
2. Click Upgrade Options.
3. Choose Download and Install.
4. Choose the release to upgrade to.
5. In the Upgrade Preparation area, choose the appropriate options.
6. Click Proceed to begin the upgrade. A progress bar displays the status of the upgrade.

After the upgrade is complete, the device reboots.

Cisco Cloud Email Security (CES) includes Cisco Email Security Appliance (ESA) and Cisco Secure Email and Web Manager devices as part of the service solution. Cisco provides regular maintenance of the products included in this solution. Customers can also request a software upgrade by contacting Cisco CES support.

The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.