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AUSCERT External Security Bulletin Redistribution
ESB-2020.0256
Cisco Small Business Smart and Managed Switches Cross-Site
Scripting Vulnerability
24 January 2020
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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
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3121
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200122-sbsms-xss
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Small Business Smart and Managed Switches Cross-Site Scripting
Vulnerability
Priority: Medium
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
CVE-2020-3121
CWE-79
CVSS Score:
6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X
Summary
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 interface.
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:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20200122-sbsms-xss
Affected Products
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
2.5.0.90:
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.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
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
providers.
Fixed Releases
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.
Source
o Cisco would like to thank Ken Pyle of DFDR Consulting 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.
Action Links for This Advisory
o Understanding Cross-Site Scripting (XSS) Threat Vectors
Related to This Advisory
o Cross-Site Scripting
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20200122-sbsms-xss
Revision History
o +---------+--------------------------+---------+--------+-----------------+
| Version | Description | Section | Status | Date |
+---------+--------------------------+---------+--------+-----------------+
| 1.0 | Initial public release. | - | Final | 2020-January-22 |
+---------+--------------------------+---------+--------+-----------------+
- --------------------------END INCLUDED TEXT--------------------
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