Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.3056 cisco-sa-20171129-ucs-central 30 November 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco UCS Central Publisher: Cisco Systems Operating System: Cisco Impact/Access: Cross-site Scripting -- Remote with User Interaction Unauthorised Access -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2017-12349 CVE-2017-12348 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129-ucs-central - --------------------------BEGIN INCLUDED TEXT-------------------- Medium Advisory ID: cisco-sa-20171129-ucs-central First Published: 2017 November 29 16:00 GMT Version 1.0: Final Workarounds: No workarounds available Cisco Bug IDs: CSCvf71978 CSCvf71986 CVE-2017-12348 CVE-2017-12349 CWE-384 CWE-79 CVSS Score: Base 5.4 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X Summary Multiple vulnerabilities in the web-based management interface of Cisco UCS Central Software could allow a remote attacker to conduct a cross-site scripting (XSS) attack against a user of the affected interface or hijack a valid session ID from a user of the affected interface. For more information about these vulnerabilities, see the Details section of this security advisory. There are no workarounds that address these vulnerabilities. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20171129-ucs-central Affected Products Vulnerable Products These vulnerabilities affect all releases of Cisco UCS Central Software prior to the first fixed release. For information about affected software releases, consult the Cisco bug IDs at the top of this advisory. Products Confirmed Not Vulnerable No other Cisco products are currently known to be affected by these vulnerabilities. Details Two vulnerabilities in the web-based management interface of Cisco UCS Central Software could allow a remote attacker to conduct a cross-site scripting (XSS) attack against a user of the affected interface or hijack a valid session ID from a user of the affected interface. 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. Cisco UCS Central Software Cross-Site Scripting Vulnerability A vulnerability in the web-based management interface of Cisco UCS Central Software could allow an authenticated, remote attacker to conduct an XSS attack against a user of the web-based management interface of the affected software. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user of the affected interface to click a malicious link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or allow the attacker to access sensitive browser-based information on the users system. To exploit this vulnerability, the attacker must have valid user credentials for and authenticate to the affected software. This vulnerability cannot be exploited to run persistent scripts in the web-based management interface of the affected software and, therefore, cannot be leveraged to affect users other than the targeted user. The CVE ID for this vulnerability is: CVE-2017-12348 The Security Impact Rating (SIR) for this vulnerability is: Medium Cisco UCS Central Software Session Fixation Vulnerability A vulnerability in the session management functionality of the web- based management interface of Cisco UCS Central Software could allow an unauthenticated, remote attacker to hijack a valid session ID from a user of the web-based management interface of the affected software. The vulnerability exists because the affected software does not assign a new session ID to a user session when a user authenticates to the software. An attacker could exploit this vulnerability by using a hijacked session ID to connect to the affected software through the web-based management interface of the software. A successful exploit could allow the attacker to hijack an authenticated users browser session. The CVE ID for this vulnerability is: CVE-2017-12349 The SIR for this vulnerability is: Medium Workarounds There are no workarounds that address these vulnerabilities. Fixed Software For information about fixed software releases, consult the Cisco bug IDs at the top of this advisory. When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts 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. Exploitation and Public Announcements The Cisco Product Security Incident Response Team (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 Application Security Consultant Indrajith.A.N for reporting these vulnerabilities. Cisco Security Vulnerability Policy 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. Action Links for This Advisory Understanding Cross-Site Scripting (XSS) Threat Vectors Related to This Advisory Cross-Site Scripting Session Fixation URL https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20171129-ucs-central Revision History Version Description Section Status Date 1.0 Initial public release. Final 2017-November-29 Legal Disclaimer 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. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. 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: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWh+fWIx+lLeg9Ub1AQiL2g//X0ZPm22QB/Tvflu7fz7pbGHb47cHP0rt UdOlOjbEV+d1xu9Rwq4DlBsS2+loXvDHHcXHfdh0sS9Qbzb7+x+pXibAjIxSgVHt 95nON2aLVXst4KCkJGzB1QYShfoKeaBYY1lryY/VxkT6cXLYT2rczeq/JTuw7UJi Ko/lodL8YZfVQ10ChpBcJUCrEgEEFxs76WexzrQFwp/0XqM+mBlEbxGC0W52I/Bq XW3GQEf8JlrzyGSyFb6YqI7pGNgF2dQDDFxGBeywjKa6d0uXbmulsgMLt+DeBGkQ 8vP4i16F9Ifmy/n/r5zksutpE06Rv5fQ46khiD73tRPIst5lfLgQBZDNqcTUHqBH A552UqW6WbMU1CXO/rTrLXvg7tizd71VFxalWCi1qumkW4sdpUR0QUnJbB4MFviV O8ljqxwNQoxJ+bW6toW5Z2PTo4fkaTlK8aTaikz3n5jv1v7WJvqhq4677f8/WGFZ wMTpoaBwCL9CO+0IPC2WeKLHxv5tEib5ZUb8Xj5Chagl2LMX/IsigTWNRoOCJPVx cXw0SWQ86ShxNQ/MrmLrJEzbND0D0/Ddx/uaNW9FsphWvpKXLcxwF2Z61tYJ4493 xKdUzKzxNp5W1w1bhH401ypvI5x4LILqnkwDqld8WfmucgkSKXzcE5eOunnNsCZT IAO5D/s3ZYE= =tjXA -----END PGP SIGNATURE-----