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AUSCERT External Security Bulletin Redistribution
Cisco Firepower Device Manager On-Box Software Remote Code
22 July 2021
AusCERT Security Bulletin Summary
Product: Cisco Firepower Device Manager On-Box Software
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
CVE Names: CVE-2021-1518
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Cisco Firepower Device Manager On-Box Software Remote Code Execution
Advisory ID: cisco-sa-fdm-rce-Rx6vVurq
First Published: 2021 July 21 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvx44278
CVE Names: CVE-2021-1518
o A vulnerability in the REST API of Cisco Firepower Device Manager (FDM)
On-Box Software could allow an authenticated, remote attacker to execute
arbitrary code on the underlying operating system of an affected device.
This vulnerability is due to insufficient sanitization of user input on
specific REST API commands. An attacker could exploit this vulnerability by
sending a crafted HTTP request to the API subsystem of an affected device.
A successful exploit could allow the attacker to execute arbitrary code on
the underlying operating system. To exploit this vulnerability, an attacker
would need valid low-privileged user credentials.
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 FDM On-Box
For information about which Cisco software releases are vulnerable, 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
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 releases, 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 FDM On-Box Software Release First Fixed Release
6.3.0 Migrate to a fixed release.
6.4.0 126.96.36.199, 6.4.4
7.0 Not vulnerable.
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.
o Cisco would like to thank Nikita Abramov and Mikhail Klyuchnikov of
Positive Technologies for reporting this vulnerability.
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-JUL-21 |
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