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             AUSCERT External Security Bulletin Redistribution

   Cisco Identity Services Engine Unauthorized File Access Vulnerability
                             16 December 2022


        AusCERT Security Bulletin Summary

Product:           Cisco Identity Services Engine
Publisher:         Cisco Systems
Operating System:  Cisco
Resolution:        Patch/Upgrade
CVE Names:         CVE-2022-20822  

Original Bulletin: 

Comment: CVSS (Max):  7.1 CVE-2022-20822 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N)
         CVSS Source: Cisco Systems
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Revision History:  December 16 2022: Vendor Update
                   December 16 2022: Vendor Update
                   October  20 2022: Initial Release

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Cisco Identity Services Engine Unauthorized File Access Vulnerability

Priority:        High
Advisory ID:     cisco-sa-ise-path-trav-Dz5dpzyM
First Published: 2022 October 19 16:00 GMT
Last Updated:    2022 December 13 18:57 GMT
Version 1.1:     Interim
Workarounds:     No workarounds available
Cisco Bug IDs:   CSCwc62415
CVE Names:       CVE-2022-20822
CWEs:            CWE-22


  o A vulnerability in the web-based management interface of Cisco Identity
    Services Engine (ISE) could allow an authenticated, remote attacker to
    list, download, and delete files on an affected device.

    This vulnerability is due to insufficient validation of user-supplied
    input. An attacker could exploit this vulnerability by sending a crafted
    HTTP request that contains certain character sequences to an affected
    system. A successful exploit could allow the attacker to list, download, or
    delete specific files on the device that their configured administrative
    level should not have access to.

    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:

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco ISE.

    For information about which Cisco software releases are vulnerable, see the
    Fixed Software section of this advisory.

    Products Confirmed Not Vulnerable

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


  o There are no workarounds that address this vulnerability.

Fixed Software

  o Cisco has released free software updates that address the vulnerability
    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:

    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

    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

    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

    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.

    Cisco ISE Release                   First Fixed Release
    3.0 and earlier                     Not vulnerable
    3.1                                 3.1P5
    3.2 ^1                              3.2P1 (Jan 2023)

    1. A hot patch may be available by request for Cisco ISE Release 3.2.
    Contact Cisco TAC to make the request.

    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

Exploitation and Public Announcements

  o The Cisco PSIRT is aware that proof-of-concept exploit code for the
    vulnerability that is described in this advisory will become available
    after software fixes are released. Public reports of the vulnerability,
    including a description and classification without specific technical
    details, are available.

    The Cisco PSIRT is not aware of any malicious use of the vulnerability that
    is described in this advisory.


  o Cisco would like to thank Davide Virruso of Yoroi for reporting this

Cisco Security Vulnerability Policy

  o 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.

Related to This Advisory



  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-path-trav-Dz5dpzyM

Revision History

  o +---------+-----------------------+---------------+---------+-------------+
    | Version |      Description      |    Section    | Status  |    Date     |
    |         | Updated summary,      | Summary,      |         |             |
    |         | fixed release         | Fixed         |         |             |
    |         | information, hot      | Software,     |         |             |
    | 1.1     | patch information,    | Exploitation  | Interim | 2022-DEC-13 |
    |         | and public            | and Public    |         |             |
    |         | announcements         | Annoucements  |         |             |
    |         | information.          |               |         |             |
    | 1.0     | Initial public        | -             | Interim | 2022-OCT-19 |
    |         | release.              |               |         |             |

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