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AUSCERT External Security Bulletin Redistribution
Cisco TelePresence Collaboration Endpoint and RoomOS
Software Denial of Service Vulnerability
7 October 2021
AusCERT Security Bulletin Summary
Product: TelePresence Collaboration Endpoint
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Existing Account
Reduced Security -- Existing Account
CVE Names: CVE-2021-34758
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Cisco TelePresence Collaboration Endpoint and RoomOS Software Denial of
Advisory ID: cisco-sa-tpce-rmos-mem-dos-rck56tT
First Published: 2021 October 6 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvy60378
CVE Names: CVE-2021-34758
o A vulnerability in the memory management of Cisco TelePresence
Collaboration Endpoint (CE) Software and Cisco RoomOS Software could allow
an authenticated, local attacker to corrupt a shared memory segment,
resulting in a denial of service (DoS) condition.
This vulnerability is due to insufficient access controls to a shared
memory resource. An attacker could exploit this vulnerability by corrupting
a shared memory segment on an affected device. A successful exploit could
allow the attacker to cause the device to reload. The device will recover
from the corruption upon reboot.
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:
o Vulnerable Products
At the time of publication, this vulnerability affected Cisco devices if
they were running a vulnerable release of Cisco TelePresence CE Software or
Cisco RoomOS Software.
For information about which Cisco software releases were vulnerable at the
time of publication, see the Fixed Software section of this advisory. See
the Details section in the bug ID(s) at the top of this advisory for the
most complete and current information.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
o There are no workarounds that address this vulnerability.
o When considering software upgrades , customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories page , to determine exposure and a complete
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
At the time of publication, the release information in the following table
(s) was accurate. See the Details section in the bug ID(s) at the top of
this advisory for the most complete and current information.
The left column lists Cisco software, and the right column indicates
whether a release was affected by the vulnerability described in this
advisory and which release included the fix for this vulnerability.
Cisco TelePresence CE Software Release First Fixed Release
Earlier than 10.7 Migrate to a fixed release.
Cisco RoomOS Software Release First Fixed Release
Earlier than September 2021 Drop September 2021 Drop
The Cisco Product Security Incident Response Team (PSIRT) validates only
the affected and fixed release information that is documented in this
Exploitation and Public Announcements
o The Cisco PSIRT is not aware of any public announcements or malicious use
of the vulnerability that is described in this advisory.
o This vulnerability was found during internal security testing by KY of the
Cisco Advanced Security Initiatives Group (ASIG).
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.
| Version | Description | Section | Status | Date |
| 1.0 | Initial public release. | - | Final | 2021-OCT-06 |
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