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AUSCERT External Security Bulletin Redistribution
ESB-2019.4176
Cisco TelePresence Collaboration Endpoint, TelePresence Codec, and RoomOS
Software Privilege Escalation Vulnerability
7 November 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco TelePresence
Operating System: Cisco
Virtualisation
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-15288
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191106-telepres-roomos-privesc
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Cisco TelePresence Collaboration Endpoint, TelePresence Codec, and RoomOS
Software Privilege Escalation Vulnerability
Priority: High
Advisory ID: cisco-sa-20191106-telepres-roomos-privesc
First Published: 2019 November 6 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvq29901
CVE-2019-15288
CWE-20
CVSS Score:
8.8 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Summary
o A vulnerability in the CLI of Cisco TelePresence Collaboration Endpoint
(CE), Cisco TelePresence Codec (TC), and Cisco RoomOS Software could allow
an authenticated, remote attacker to escalate privileges to an unrestricted
user of the restricted shell.
The vulnerability is due to insufficient input validation. An attacker
could exploit this vulnerability by including specific arguments when
opening an SSH connection to an affected device. A successful exploit could
allow the attacker to gain unrestricted user access to the restricted shell
of an affected device.
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-telepres-roomos-privesc
Affected Products
o Vulnerable Products
This vulnerability affects Cisco TelePresence CE Software releases earlier
than 9.8.1, Cisco TC Software releases earlier than 7.3.19, and Cisco
RoomOS Software releases earlier than RoomOS September Drop 1 2019 that
have the SSH feature enabled.
SSH is enabled by default in Cisco TelePresence CE Software, Cisco TC
Software, and Cisco RoomOS Software.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
For environments where SSH is not utilized for device management, SSH can
be disabled to mitigate exploitation of this vulnerability. Refer to the
Administration Guide for the specific Endpoint for instructions on
disabling SSH.
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
Cisco fixed this vulnerability in Cisco TelePresence CE Software release
9.8.1 and later and Cisco TC Software release 7.3.19.
Customers can download Cisco TelePresence CE Software and Cisco TC Software
from the Software Center by doing the following:
1. Click Browse all .
2. Choose Collaboration Endpoints and choose the appropriate Endpoint.
3. Access releases by using the left pane of the Endpoint page.
Cisco has addressed these vulnerabilities in Cisco RoomOS September Drop 1
2019 Service, which is cloud based. No user action is required. Customers
can determine the current remediation status or software version by using
the Help function in the service GUI.
Customers who need additional information are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
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 vulnerability that is
described in this advisory.
Source
o This vulnerability was found by KO of Cisco ASIG during internal security
testing.
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-telepres-roomos-privesc
Revision History
o +---------+-------------------------+---------+--------+------------------+
| Version | Description | Section | Status | Date |
+---------+-------------------------+---------+--------+------------------+
| 1.0 | Initial public release. | - | Final | 2019-November-06 |
+---------+-------------------------+---------+--------+------------------+
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