CVE-2022-20798: Cisco Security Advisory: Cisco Email Security Appliance and Cisco Secure Email and Web Manager External Authentication Bypass Vulnerability

Cisco has released free software updates that address the vulnerability described in this advisory. 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.

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

In the following table(s), the left column lists Cisco software releases. The right column indicates whether a release is affected by the vulnerability that is described in this advisory and the first release that includes the fix for this vulnerability. Customers are advised to upgrade to an appropriate fixed software release as indicated in this section.

Secure Email and Web Manager: CSCvx88026

Cisco AsyncOS Release

First Fixed Release

111 and earlier

Migrate to fixed release.

12

Migrate to fixed release.

12.8

Migrate to fixed release.

13.0

13.0.0-277

13.6

13.6.2-090

13.8

13.8.1-090

14.0

14.0.0-418

14.1

14.1.0-250

1. Cisco AsyncOS Software releases earlier than Release 11 have reached end of software maintenance. Customers are advised to migrate to a supported release that includes the fix for this vulnerability.

Email Security Appliance: CSCvy13453

Cisco AsyncOS Release

First Fixed Release

Earlier than 111

Migrate to fixed release.

11

Migrate to fixed release.

12

Migrate to fixed release.

13

Migrate to fixed release.

14

14.0.1-033

1. Cisco AsyncOS Software releases earlier than Release 11 have reached end of software maintenance. Customers are advised to migrate to a supported release that includes the fix for this vulnerability.

Cisco Cloud Email Security (CES) includes Cisco 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.