Summary

• Multiple vulnerabilities in the web-based management interface of Cisco AsyncOS Software for Cisco Secure Email and Web Manager; Cisco Secure Email Gateway, formerly Cisco Email Security Appliance (ESA); and Cisco Secure Web Appliance, formerly Cisco Web Security Appliance (WSA), could allow a remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface.

  For more information about these vulnerabilities, see the Details section of this advisory.

  Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

  This advisory is available at the following link:
  https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-sma-wsa-xss-cP9DuEmq

  Attention: Simplifying the Cisco portfolio includes the renaming of security products under one brand: Cisco Secure. For more information, see Meet Cisco Secure.

Affected Products

• Vulnerable Products

  At the time of publication, CVE-2023-20028 affected the following Cisco products:

  • Secure Email and Web Manager, both virtual and hardware appliances
  • Secure Web Appliance, both virtual and hardware appliances

  At the time of publication, CVE-2023-20119 affected Cisco Secure Email and Web Manager, both virtual and hardware appliances.

  At the time of publication, CVE-2023-20120 affected the following Cisco products:

  • Secure Email and Web Manager, both virtual and hardware appliances
  • Secure Email Gateway, both virtual and hardware appliances
  • Secure Web Appliance, both virtual and hardware appliances

  For information about which Cisco software releases were vulnerable at the time of publication, see the Fixed Software section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.

  Products Confirmed Not Vulnerable

  Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.

  Cisco has confirmed that CVE-2023-20028 does not affect Cisco Secure Email Gateway, both virtual and hardware appliances.

  Cisco has confirmed that CVE-2023-20119 does not affect the following Cisco products:

  • Secure Email Gateway, both virtual and hardware appliances
  • Secure Web Appliance, both virtual and hardware appliances

Details

• The vulnerabilities are not dependent on one another. Exploitation of one of the vulnerabilities is not required to exploit another vulnerability. In addition, a software release that is affected by one of the vulnerabilities may not be affected by the other vulnerabilities.

  Details about the vulnerabilities are as follows:

  CVE-2023-20119: Cisco Secure Email and Web Manager Reflected XSS Vulnerability

  A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Secure Email and Web Manager could allow an unauthenticated, remote attacker to conduct an XSS attack against a user of the interface.

  This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user of an affected interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  Bug ID(s): CSCwe12624
  CVE ID: CVE-2023-20119
  Security Impact Rating (SIR): Medium
  CVSS Base Score: 6.1
  CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

  CVE-2023-20120: Cisco Secure Email and Web Manager, Cisco Secure Email Gateway, and Cisco Secure Web Appliance Stored XSS Vulnerability

  A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Secure Email and Web Manager, Cisco Secure Email Gateway, and Cisco Secure Web Appliance could allow an authenticated, remote attacker to conduct an XSS attack against a user of the interface.

  This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user of an affected interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  Bug ID(s): CSCwe14247, CSCwe14250, CSCwe18586
  CVE ID: CVE-2023-20120
  Security Impact Rating (SIR): Medium
  CVSS Base Score: 5.4
  CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

  CVE-2023-20028: Cisco Secure Email and Web Manager and Cisco Secure Web Appliance Stored XSS Vulnerability

  A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Secure Email and Web Manager and Cisco Secure Web Appliance could allow an authenticated, remote attacker to conduct an XSS attack against a user of the interface.

  This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user of an affected interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  Bug ID(s): CSCwd50087, CSCwd50094
  CVE ID: CVE-2023-20028
  Security Impact Rating (SIR): Medium
  CVSS Base Score: 4.8
  CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Workarounds

• There are no workarounds that address these vulnerabilities.

Fixed Software

• 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.

  Fixed Releases

  At the time of publication, the release information in the following tables was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.

  The left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerabilities that are described in this advisory and which release included the fix for these vulnerabilities.

  Secure Email and Web Manager

  Cisco AsyncOS Release	First Fixed Release for CVE-2023-20028, CVE-2023-20119, and CVE-2023-20120
  14.3 and earlier	Migrate to a fixed release.
  15.0	15.0.01 (Jul 2023)

  Secure Email Gateway

  Cisco AsyncOS Release	First Fixed Release for CVE-2023-20120
  14.3 and earlier2	Migrate to a fixed release.
  15.0	15.0.01 (Jul 2023)

  Secure Web Appliance

  Cisco AsyncOS Release	First Fixed Release for CVE-2023-20028 and CVE-2023-20120
  14.5 and earlier	Migrate to a fixed release.
  15.0	15.0.0-3321

  1. This release is a Limited Deployment (LD) release. Customers who wish to upgrade to this release can contact Cisco TAC to provision this release to their appliances. The General Deployment (GD) release is currently under review and will be available in the future.

  2. For customers using Cisco Secure Email Cloud Gateway, no action is required. Cisco has taken actions to protect the infrastructure from this vulnerability, and upgrades to fixed releases will be deployed as part of the standard upgrade processes for the environment.

  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.

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

Exploitation and Public Announcements

• The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that is described in this advisory.

Source

• CVE-2023-20028 was found by Roberto Petrillo of Cisco during internal security testing.

  CVE-2023-20119 and CVE-2023-20120 were found during the resolution of a Cisco TAC support case.

URL

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-sma-wsa-xss-cP9DuEmq

Revision History

• Version	Description	Section	Status	Date
  1.2	Updated the fixed releases information for Cisco Secure Email Cloud Gateway.	Fixed Releases	Final	2023-JUL-11
  1.1	Updated the fixed releases for Secure Email and Web Manager and Secure Email Gateway.	Fixed Releases	Final	2023-JUN-26
  1.0	Initial public release.	-	Final	2023-JUN-21

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