-----BEGIN PGP SIGNED MESSAGE-----
AUSCERT External Security Bulletin Redistribution
Cisco Small Business Smart and Managed Switches Cross-Site
24 January 2020
AusCERT Security Bulletin Summary
Product: Cisco Small Business Smart and Managed Switches
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Cross-site Scripting -- Remote with User Interaction
CVE Names: CVE-2020-3121
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Small Business Smart and Managed Switches Cross-Site Scripting
Advisory ID: cisco-sa-20200122-sbsms-xss
First Published: 2020 January 22 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvs09313
o A vulnerability in the web-based management interface of Cisco Small
Business Smart and Managed Switches could allow an unauthenticated, remote
attacker to conduct a cross-site scripting (XSS) attack against a user of
The vulnerability is due to insufficient validation of user-supplied input
by the web-based management interface of the affected device. An attacker
could exploit this vulnerability by persuading a user of the interface to
click a malicious link and access a specific page. A successful exploit
could allow the attacker to execute arbitrary script code in the context of
the affected interface or access sensitive, browser-based information.
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 the following Cisco
products if they are running a firmware release earlier than Release
250 Series Smart Switches
350 Series Managed Switches
550X Series Stackable Managed Switches
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 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
For information about fixed software releases, see the Details section in
the bug ID(s) at the top of this advisory.
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 Ken Pyle of DFDR Consulting for reporting this
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 Understanding Cross-Site Scripting (XSS) Threat Vectors
Related to This Advisory
o Cross-Site Scripting
| Version | Description | Section | Status | Date |
| 1.0 | Initial public release. | - | Final | 2020-January-22 |
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to email@example.com
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
Australian Computer Emergency Response Team
The University of Queensland
Internet Email: firstname.lastname@example.org
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
-----BEGIN PGP SIGNATURE-----
-----END PGP SIGNATURE-----