A vulnerability in the External RESTful Services (ERS) API of Cisco Identity Services Engine (ISE) Software could allow an authenticated, remote attacker to obtain sensitive information. This vulnerability is due to excessive verbosity in a specific REST API output. An attacker could exploit this vulnerability by sending a crafted HTTP request to the affected device. A successful exploit could allow the attacker to obtain sensitive information, including administrative credentials for an external authentication server. Note: To successfully exploit this vulnerability, the attacker must have valid ERS administrative credentials. 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-ise-pwd-WH64AhQF
A vulnerability in the External RESTful Services (ERS) API of Cisco Identity Services Engine (ISE) Software could allow an authenticated, remote attacker to obtain sensitive information.
This vulnerability is due to excessive verbosity in a specific REST API output. An attacker could exploit this vulnerability by sending a crafted HTTP request to the affected device. A successful exploit could allow the attacker to obtain sensitive information, including administrative credentials for an external authentication server.
Note: To successfully exploit this vulnerability, the attacker must have valid ERS administrative credentials.
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-ise-pwd-WH64AhQF
At the time of publication, this vulnerability affected Cisco Identity Service Engine (ISE) Software if an external authentication server is configured.
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.
Determine Whether External Authentication Server is Configured
To determine whether an external authentication server is configured, follow these steps:
Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.
There are no workarounds that address this vulnerability.
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.
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 right column indicates whether a release was affected by the vulnerability described in this advisory and which release included the fix for this vulnerability.
| Cisco ISE Software Releases | First Fixed Release |
|---|---|
| 2.3 and earlier | Not vulnerable. |
| 2.41 | Migrate to fixed release. |
| 2.6 | 2.6P11 |
| 2.7 | 2.7P82 (Oct 2022) |
| 3.0 | 3.0P6 |
| 3.1 | 3.1P3 |
For instructions on upgrading your 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.
The Cisco PSIRT is not aware of any malicious use of the vulnerability that is described in this advisory.
Cisco would like to thank Filip Palian for reporting this vulnerability.
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
| Version | Description | Section | Status | Date |
|---|---|---|---|---|
| 1.0 | Initial public release. | - | Final | 2022-AUG-03 |
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