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AUSCERT External Security Bulletin Redistribution
ESB-2020.0037.2
Cisco Data Center Network Manager Command Injection Vulnerabilities
16 January 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Data Center Network Manager (DCNM)
Publisher: Cisco Systems
Operating System: Windows
Linux variants
Virtualisation
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-15979 CVE-2019-15978
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200102-dcnm-comm-inject
Revision History: January 16 2020: Vendor advises that proof-of-concept
exploit code is available.
January 3 2020: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Data Center Network Manager Command Injection Vulnerabilities
Priority: High
Advisory ID: cisco-sa-20200102-dcnm-comm-inject
First Published: 2020 January 2 16:00 GMT
Last Updated: 2020 January 15 15:58 GMT
Version 1.1: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvr44798CSCvr46507
CVE-2019-15978
CVE-2019-15979
CWE-78
CVSS Score:
7.2 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Summary
o Multiple vulnerabilities in the REST and SOAP API endpoints of Cisco Data
Center Network Manager (DCNM) could allow an authenticated, remote attacker
with administrative privileges on the DCNM application to inject arbitrary
commands on the underlying operating system (OS).
For more information about these vulnerabilities, see the Details section
of this advisory.
Note: The severity of these vulnerabilities is aggravated by the
vulnerabilities described in the Cisco Data Center Network Manager
Authentication Bypass Vulnerabilities advisory, published simultaneously
with this one.
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-20200102-dcnm-comm-inject
Affected Products
o Vulnerable Products
These vulnerabilities affect Cisco DCNM software releases earlier than
Release 11.3(1) for Microsoft Windows, Linux, and virtual appliance
platforms.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by these vulnerabilities.
Details
o Two vulnerabilities in the REST and SOAP API endpoints of Cisco DCNM could
allow an authenticated, remote attacker with administrative privileges on
the DCNM application to inject arbitrary commands on the underlying
operating system (OS).
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.
Vulnerability Details
Cisco Data Center Network Manager REST API Command Injection Vulnerability
A vulnerability in the REST API of Cisco DCNM could allow an authenticated,
remote attacker with administrative privileges on the DCNM application to
inject arbitrary commands on the underlying OS.
The vulnerability is due to insufficient validation of user-supplied input
to the API. An attacker could exploit this vulnerability by sending a
crafted request to the API. A successful exploit could allow an attacker to
execute arbitrary commands on the device with full administrative
privileges.
CVE ID: CVE-2019-15978
Cisco Data Center Network Manager SOAP API Command Injection Vulnerability
A vulnerability in the SOAP API of Cisco DCNM could allow an authenticated,
remote attacker with administrative privileges on the DCNM application to
inject arbitrary commands on the underlying OS.
The vulnerability is due to insufficient validation of user-supplied input
to the API. An attacker could exploit this vulnerability by sending a
crafted request to the API. A successful exploit could allow an attacker to
execute arbitrary commands on the device with full administrative
privileges.
CVE ID: CVE-2019-15979
Workarounds
o There are no workarounds that address these vulnerabilities.
Fixed Software
o Cisco has released free software updates that address the vulnerabilities
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
Cisco fixed these vulnerabilities in Cisco DCNM Software releases 11.3(1)
and later.
To download the software from the Software Center on Cisco.com, do the
following:
1. Click Browse All .
2. Choose Cloud and Systems Management > Data Center Infrastructure
Management > Data Center Network Manager .
3. Choose a release from the left pane of the Data Center Network Manager
page.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is aware that
proof-of-concept exploit code is available for the vulnerabilities that are
described in this advisory.
Cisco PSIRT is not aware of any 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, working
with Trend Micro's Zero Day Initiative and iDefense, Accenture, 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.
Action Links for This Advisory
o Snort Rule 52546
Snort Rule 52547
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20200102-dcnm-comm-inject
Revision History
o +---------+--------------------+---------------+--------+-----------------+
| Version | Description | Section | Status | Date |
+---------+--------------------+---------------+--------+-----------------+
| | Updated | Exploitation | | |
| 1.1 | information about | and Public | Final | 2020-January-15 |
| | the availability | Announcements | | |
| | of exploit code. | | | |
+---------+--------------------+---------------+--------+-----------------+
| 1.0 | Initial public | - | Final | 2020-January-02 |
| | release. | | | |
+---------+--------------------+---------------+--------+-----------------+
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