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AUSCERT External Security Bulletin Redistribution
Cisco Small Business 300 Series Managed Switches
Authenticated Reflected Cross-Site Scripting Vulnerability
2 August 2018
AusCERT Security Bulletin Summary
Product: Cisco Small Business 300 Series Managed Switches
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Cross-site Scripting -- Existing Account
CVE Names: CVE-2018-0408
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Cisco Security Advisory
Cisco Small Business 300 Series Managed Switches Authenticated Reflected
Cross-Site Scripting Vulnerability
2018 August 1 16:00 GMT
No workarounds available
Cisco Bug IDs:
Base 5.4[blue-squar]Click Icon to Copy Verbose Score
o A vulnerability in the web-based management interface of Cisco Small
Business 300 Series (Sx300) Managed Switches could allow an authenticated,
remote attacker to conduct a reflected cross-site scripting (XSS) attack
against a user of the web-based management interface of an affected device.
The vulnerability is due to insufficient validation of user-supplied input
by the web-based management interface of an affected device. An attacker
could exploit this vulnerability by persuading a user of the interface to
click a crafted link. A successful exploit could allow the attacker to
execute arbitrary script code in the context of the interface or allow the
attacker to access sensitive browser-based information.
There are no workarounds that address this vulnerability.
This advisory is available at the following link:
o Vulnerable Products
This vulnerability affects Cisco Small Business 300 Series (Sx300) Managed
Switches. For information about affected software releases, consult the
Cisco bug ID(s) at the top of this advisory.
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 For information about fixed software releases, consult the Cisco bug ID(s)
at the top of this advisory.
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
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 Sven Fassbender from modzero 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.
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