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 exists because affected devices with the High Availability (HA) feature enabled do not properly perform input validation. An attacker could exploit this vulnerability by uploading a malicious file to either the HA active or standby device. A successful exploit could allow the attacker to execute arbitrary code with root-level privileges on the underlying operating system. 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
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 exists because affected devices with the High Availability (HA) feature enabled do not properly perform input validation. An attacker could exploit this vulnerability by uploading a malicious file to either the HA active or standby device. A successful exploit could allow the attacker to execute arbitrary code with root-level privileges on the underlying operating system.
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
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.
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.
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 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.
This vulnerability is fixed in the following Cisco PI Software releases and later:
This vulnerability is fixed in the following Cisco EPNM releases and later:
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any malicious use of the vulnerability that is described in this advisory.
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 |
|---|---|---|---|---|
| 2.0 | Further review showed that there are no time constraints for this vulnerability. Affected products with HA configured should be considered vulnerable. CVSS score is updated to 9.8 and the SIR set to Critical. | Header, Summary, and Details | Final | 2019-November-12 |
| 1.0 | Initial public release. | - | Final | 2019-November-06 |
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