Summary

• Multiple vulnerabilities in Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to upload malicious files to the web root of the application or conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. To exploit these vulnerabilities, an attacker must have valid credentials on an affected device.

  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-secure-endpoint-dos-RzOgFKnd

Affected Products

• Vulnerable Products

  At the time of publication, these vulnerabilities affected Cisco ISE.

  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 these vulnerabilities.

Details

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

  Details about the vulnerabilities are as follows:

  CVE-2023-20272: Cisco ISE Arbitrary File Write Vulnerability

  A vulnerability in the web-based management interface of Cisco ISE could allow an authenticated, remote attacker to upload malicious files to the web root of the application.

  This vulnerability is due to insufficient file input validation. An attacker could exploit this vulnerability by uploading a malicious file to the web interface. A successful exploit could allow the attacker to replace files and gain access to sensitive server-side information.

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

  Bug ID(s): CSCwc45768
  CVE ID: CVE-2023-20272
  Security Impact Rating (SIR): Medium
  CVSS Base Score: 6.7
  CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L

  CVE-2023-20208: Cisco ISE XSS Vulnerability

  A vulnerability in the web-based management interface of Cisco ISE could allow an authenticated, remote attacker to conduct an XSS attack against a user of the web-based management interface of an affected device.

  This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or access sensitive, browser-based information. To exploit this vulnerability, an attacker would need valid administrative credentials.

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

  Bug ID(s): CSCwc45750
  CVE ID: CVE-2023-20208
  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 table(s) 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 center and right columns indicate whether a release was affected by the vulnerabilities that are described in this advisory and which release included the fix for these vulnerabilities.

  Cisco ISE Release	First Fixed Release for CVE-2023-20272	First Fixed Release for CVE-2023-20208
  2.7 and earlier	Not vulnerable	Not vulnerable
  3.0	3.0P8	3.0P8
  3.1	3.1P5	3.1P6
  3.2	Not vulnerable	3.2P1
  3.3	Not vulnerable	Not vulnerable

  For instructions on upgrading a device, see the Upgrade Guides located on the Cisco Identity Service Engine support page.

  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 are described in this advisory.

Source

• Cisco would like to thank the following people for reporting these vulnerabilities:

  • Cristian Mocanu of Deloitte: CVE-2023-20272 and CVE-2023-20208
  • Dan Marin, Teodor Cervinski, and George Jubleanu of Deloitte: CVE-2023-20208
  • Pear1y: CVE-2023-20272

URL

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-mult-j-KxpNynR

Revision History

• Version	Description	Section	Status	Date
  1.0	Initial public release.	-	Final	2023-NOV-15

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