07 November 2019
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.4189 Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution Vulnerability 7 November 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Prime Infrastructure Publisher: Cisco Systems Operating System: Cisco Impact/Access: Root Compromise -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-15958 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191106-pi-epn-codex - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution Vulnerability Priority: High Advisory ID: cisco-sa-20191106-pi-epn-codex First Published: 2019 November 6 16:00 GMT Version 1.0: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvp79419CSCvp79611 CVE-2019-15958 CWE-20 CVSS Score: 8.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X Summary o A vulnerability in the REST API of Cisco Prime Infrastructure (PI) and Cisco Evolved Programmable Network Manager (EPNM) could allow an unauthenticated remote attacker to execute arbitrary code with root privileges on the underlying operating system. The vulnerability is due to insufficient input validation during the initial High Availability (HA) configuration and registration process of an affected device. An attacker could exploit this vulnerability by uploading a malicious file during the HA registration period. A successful exploit could allow the attacker to execute arbitrary code with root -level privileges on the underlying operating system. Note: This vulnerability can only be exploited during the HA registration period. See the Details section for more information. 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-20191106-pi-epn-codex Affected Products o Vulnerable Products This vulnerability affects Cisco PI Software releases prior to 3.4.2, 3.5.1, 3.6.0 Update 02 and Cisco EPNM releases prior to 3.0.2. Note: Recent software changes have reduced the attack surface of this vulnerability. Cisco PI releases 3.4.1, 3.5, 3.6, and EPNM Release 3.0.1 and later up to the First Fixed Release, require authentication in order to exploit this vulnerability. All prior versions do not require authentication to be exploited. For information about which Cisco PI Software and Cisco EPNM releases are resolved, 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. Details o This vulnerability allows an attacker to upload malicious files to either the primary or secondary device during the HA registration period, which is one of the steps in the initial HA configuration. Once this HA registration process completes and the pair goes into HA active and standby roles, this vulnerability cannot be exploited. The time it takes for the HA registration process to complete for PI is dependent on a number of factors, but for a typical new HA deployment with 100 devices and a 1 Gbps link between peers, it will take approximately 25 minutes. For EPNM, this process typically takes 30 to 60 minutes. 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 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. 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. 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 This vulnerability is fixed in the following Cisco PI Software releases and later: 3.4.2 3.5.1 3.6.0 Update 02 3.7.0 This vulnerability is fixed in the following Cisco EPNM releases and later: 3.0.2 3.1 Exploitation and Public Announcements o The Cisco Product Security Incident Response Team (PSIRT) is not aware of any malicious use of the vulnerability that is described in this advisory. Source o Cisco would like to thank Steven Seeley (mr_me) of Source Incite for reporting this vulnerability. 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. URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20191106-pi-epn-codex Revision History o +---------+-------------------------+---------+--------+------------------+ | Version | Description | Section | Status | Date | +---------+-------------------------+---------+--------+------------------+ | 1.0 | Initial public release. | - | Final | 2019-November-06 | +---------+-------------------------+---------+--------+------------------+ - --------------------------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 firstname.lastname@example.org 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: email@example.com 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 iQIVAwUBXcOeTmaOgq3Tt24GAQgBVQ/+KKLH5dwt5JVSASX1jvqF/x+Npd3ZX+Ef cGHnM1VKX81n9drWfYp/CHycyeUZry48r2I374kTvZCkn4+n/WKf59wVGVunGMkF cruPtdQGmMjkuRv5cU8Y69Tm4j4VRA2VR2UgtHlOUaYfxmFwiu/DOyNScEeUHb4Z sQKU6erJjsAU5ksopom1UjFgtbEQuLNDM/8WFtB35XK3ekk8DhabDnX36Nhs2Paa lRF40tqJKJ0XZ5XnRRhc2KdoRa4n11RrFCzZwQ0tjwacpdBJn5lUnU8whIB1gqWh J6FsDYdcARMzlHM+pnRPXPWEHeeqOuW1CznKyegsiEZz3D0plWF4NRqSa+mF+BPG a1L+TRgwe0msnwsYwBASghY2XAEd0CmFNGtawsrXX4cs0X2gbJqmmg+Mk8zopDaJ GSg1BI7ttoenhLMvHSNqLRv0CNdAL/JCun7LFqVzOlWjnAuQxYvgOk0IoNUCxpx3 hXOiQvchoh/StsGKdT5SoJMVjRNXISP9KpNmjcjwSrT5wifyZkudJsyeceS+iSef 3a23IfkgezWc+KTnmyEe9tGauQ3XPenIXitlkLQOonqpYDTtShm+AmxAgKXVf7u0 4eXJofr0vOviBIl8vOG+1XmGNPvXhZxGuVZc6uczI7FIswMzvybAr7GKXqhfn4ne UOByl3saCIs= =5c2N -----END PGP SIGNATURE-----