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AUSCERT External Security Bulletin Redistribution
ESB-2019.1748
Cisco Prime Infrastructure and Evolved Programmable Network
Manager Remote Code Execution Vulnerabilities
16 May 2019
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Prime Infrastructure
Cisco Evolved Programmable Network Manager
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Increased Privileges -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-1823 CVE-2019-1822 CVE-2019-1821
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-pi-rce
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code
Execution Vulnerabilities
Priority: Critical
Advisory ID: cisco-sa-20190515-pi-rce
First Published: 2019 May 15 16:00 GMT
Last Updated: 2019 May 15 22:58 GMT
Version 1.1: Final
Workarounds: No workarounds available
CVE-2019-1821
CVE-2019-1822
CVE-2019-1823
CWE-20
CVSS Score:
9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Summary
o Multiple vulnerabilities in the web-based management interface of Cisco
Prime Infrastructure (PI) and Cisco Evolved Programmable Network (EPN)
Manager could allow a remote attacker to gain the ability to execute
arbitrary code with elevated privileges on the underlying operating system.
One of these issues, CVE-2019-1821, can be exploited by an unauthenticated
attacker that has network access to the affected administrative interface.
The second and third issues, CVE-2019-1822 and CVE-2019-1823, require that
an attacker have valid credentials to authenticate to the impacted
administrative interface.
These vulnerabilities exist because the software improperly validates
user-supplied input. An attacker could exploit these vulnerabilities by
uploading a malicious file to the administrative web interface. A
successful exploit could allow the attacker to execute code with root
-level privileges on the underlying operating system.
Cisco has released software updates that address these vulnerabilities.
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-20190515-pi-rce
Affected Products
o Vulnerable Products
These vulnerabilities affect Cisco PI Software Releases prior to 3.4.1,
3.5, and 3.6, and EPN Manager Releases prior to 3.0.1.
Determining the PI Software Release
The administrator can view the PI software release in three ways:
The administrator can issue the show version command from the console
CLI. The following output is from an affected application that is
running PI Software Release 3.3.0:
piconsole# show version
Cisco Application Deployment Engine OS Release: 3.1
ADE-OS Build Version: 3.1.0.001
ADE-OS System Architecture: x86_64
Copyright (c) 2009-2017 by Cisco Systems, Inc.
All rights reserved.
Hostname: XXXXXXXXX
Version information of installed applications
---------------------------------------------
Cisco Prime Infrastructure
********************************************************
Version : 3.3.0
Build : 3.3.0.0.342
The administrator can view the PI release and maintenance release
updates by connecting to the web interface using the http(s)://
<system-ip> access URL. The PI software release is displayed on the
welcome screen. The following is an example of text that is displayed
in the pop-up window for PI Software Release 3.3:
Cisco Prime Infrastructure
Version 3.3
View Installed Update
The administrator can also view the PI release and maintenance releases
by logging in to the web interface using the http(s)://<system-ip>
access URL and choosing Gear > About Prime Infrastructure.
Determining the EPN Manager Software Release
The administrator can log in to the web GUI to view the software updates in
three ways:
Click the View Installed Updates link on the login page.
Access the View Installed Updates link from the About Cisco EPN Manager
page:
1. Click the settings icon at the top right of the page.
2. Click About Cisco EPN Manager .
3. Click View Installed Updates .
Choose Administration > Licenses and Software Updates > Software Update
in the EPN Manager. (This method provides the most detail.)
The Software Update page displays two tabs:
Installed Updates: Updates that Cisco EPN Manager is currently using.
Uploaded Update Files: Update files that have been uploaded to the
server (including those that are not being used). The Corresponding
Updates field lists any prerequisite updates that were also uploaded.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by these vulnerabilities.
Workarounds
o There are no workarounds that address these vulnerabilities.
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
These vulnerabilities are fixed in Cisco PI Software Releases 3.4.1, 3.5,
and 3.6, and EPN Manager Release 3.0.1.
Note: Customers running releases of Cisco PI 3.4 must apply the Security
Update to the latest maintenance release, PI 3.4.1, to patch these
vulnerabilities for PI 3.4.
Note: Customers running releases of Cisco PI 3.5 must apply the Security
Update to PI 3.5.
Customers can download the Cisco PI Software from the Software Center on
Cisco.com by doing the following:
Click Browse all .
Choose Cloud and Systems Management > Routing and Switching Management
> Network Management Solutions > Prime Infrastructure .
Customers can download the Cisco EPN Manager Software from the Software
Center on Cisco.com by doing the following:
Click Browse all .
Choose Cloud and Systems Management > Routing and Switching Management
> Evolved Programmable Network Manager .
Exploitation and Public Announcements
o 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
o Cisco would like to thank Steven Seeley (mr_me) of Source Incite for
reporting these vulnerabilities.
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-20190515-pi-rce
Revision History
o +---------+------------------------------+---------+--------+-------------+
| Version | Description | Section | Status | Date |
+---------+------------------------------+---------+--------+-------------+
| 1.1 | Updated summary to clarify | Summary | Final | 2019-May-16 |
| | CVSS score change. | | | |
+---------+------------------------------+---------+--------+-------------+
| 1.0 | Initial public release. | - | Final | 2019-May-15 |
+---------+------------------------------+---------+--------+-------------+
- --------------------------END INCLUDED TEXT--------------------
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