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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2023.1720.2 Cisco DNA Center Privilege Escalation Vulnerability 24 March 2023 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco DNA Center Publisher: Cisco Systems Operating System: Cisco Resolution: Patch/Upgrade CVE Names: CVE-2023-20055 Original Bulletin: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnac-privesc-QFXe74RS Comment: CVSS (Max): 8.0 CVE-2023-20055 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H) CVSS Source: Cisco Systems Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H Revision History: March 24 2023: fixed typo in the product name March 23 2023: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco DNA Center Privilege Escalation Vulnerability Priority: High Advisory ID: cisco-sa-dnac-privesc-QFXe74RS First Published: 2023 March 22 16:00 GMT Version 1.0: Final Workarounds: No workarounds available Cisco Bug IDs: CSCwd21514 CVE Names: CVE-2023-20055 Summary o A vulnerability in the management API of Cisco DNA Center could allow an authenticated, remote attacker to elevate privileges in the context of the web-based management interface on an affected device. This vulnerability is due to the unintended exposure of sensitive information. An attacker could exploit this vulnerability by inspecting the responses from the API. Under certain circumstances, a successful exploit could allow the attacker to access the API with the privileges of a higher-level user account. To successfully exploit this vulnerability, the attacker would need at least valid Observer 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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnac-privesc-QFXe74RS Affected Products o Vulnerable Products This vulnerability affects Cisco DNA Center in the default configuration. 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. Workarounds 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: 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. 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 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, 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 DNA Center Release First Fixed Release 2.3.2 and earlier Migrate to a fixed release. 2.3.3 2.3.3.6 2.3.4 Migrate to a fixed release. 2.3.5 Not vulnerable. Cisco DNA Center is a dedicated physical appliance that is purchased from Cisco with the Cisco DNA Center ISO image pre-installed. System updates are available for installation from the Cisco cloud and are not available for download from the Software Center on Cisco.com. To upgrade to a fixed release of Cisco DNA Center Software, use the System Updates feature of the software. For more information, see the Cisco DNA Center Upgrade Guide . 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 o The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. Source o This vulnerability was found during the resolution of a Cisco TAC support case. 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. Subscribe to Cisco Security Notifications o Subscribe Related to This Advisory o URL o https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnac-privesc-QFXe74RS Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2023-MAR-22 | +----------+---------------------------+----------+--------+--------------+ Legal Disclaimer o THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBZBz/fMkNZI30y1K9AQi/oA//WrFseiFoKshQFl+oFJnvO4aF0NLxMBCz kVZYz7HSv4KEWzPTEL2QaaVqgPgDDdKAyiQ3P75xEkGYZ+1atp4dHzgV2GfXAAiH ExRmGQxinYOjV1/q6hc+X2miMsBEx5Axj1SdhzQehq19YAkQ9uZABrXwdyf+isM2 4u6IcBoW3liNZVCjmi1MK5M/wwrXiIBR9nuIERx0jPdBpZC4BQ4/JKMWw5sAETAG SmQO3Qzs3rztlqG++FYVKrskA380Mrj/DhTTZTGrP7lq20FiRS1b5aIPR3COdOzR 3DxEQiK/tyX/iWJaTcRq0iRqxw7qMOXbHo4blEtdADXtzt6pxsRN8j+krCqxfHyg SJTLCvNowOfkOug9qBD9iRV3SN2PFZWo/yy+sCoqLA8yIPRDdXQTT3LsRykMytii X0lq7zBnqZEozigTtyELc37FLIxYOsIeTKIWhOINI6/FpWT4L+gJ+Ucf/YpvSvj8 motT76yvWrku1c/i9b8MJWvxVdJ8FL7TZcn0l10bDPpHJkpDvQScD7Wgx4QSksn9 InXCqp3t6uJz2a5HSL2QFrwrL8iphRAT5WGgtecreeyadn5JUx50mAJTMsBwiOCa HCvVr7wsUR3BEk2t3nF0bFJ6h0TFiQZpLGTK9kloPb8T5hhiknc9vU7dE7LXYIej ugjGIPcWmMY= =6Yly -----END PGP SIGNATURE-----