medium
6.1
CWE
79
Advisory Published
Updated

CVE-2020-3121: Cisco Small Business Smart and Managed Switches Cross-Site Scripting Vulnerability

First published: Sun Jan 26 2020(Updated: )

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.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco SG250X-24P Firmware<=2.5.0.90
Cisco SG250X-24
Cisco SG250X-24P Firmware<=2.5.0.90
Cisco SG250X-24P Firmware
Cisco SG250X-48P Firmware<=2.5.0.90
Cisco SG250X-48 Firmware
Cisco SG250X-48P Firmware<=2.5.0.90
Cisco SG250X-48P Firmware
Cisco SG250-08HP Firmware<=2.5.0.90
Cisco SG250-08
Cisco SG250-08HP Firmware<=2.5.0.90
Cisco SG250-08HP
Cisco SG250-10P Firmware<=2.5.0.90
Cisco SG250-10P
Cisco SG250-18 Firmware<=2.5.0.90
Cisco SG250-18
Cisco SG250-26HP Firmware<=2.5.0.90
Cisco SG250-26 Firmware
Cisco SG250-26HP Firmware<=2.5.0.90
Cisco SG250-26HP Firmware
Cisco SG250-26P Firmware<=2.5.0.90
Cisco SG250-26P Firmware
Cisco SG250-50P Firmware<=2.5.0.90
Cisco SG250-50P Firmware
Cisco SG250-50HP Firmware<=2.5.0.90
Cisco SG250-50HP Firmware
Cisco SG250-50P Firmware<=2.5.0.90
Cisco SG250-50P Firmware
Cisco SG250-24 Firmware<=2.5.0.90
Cisco SG250-24 Firmware
Cisco SG250-24P Firmware<=2.5.0.90
Cisco SG250-24P Firmware
Cisco SG250-48 Firmware<=2.5.0.90
Cisco SG250-48 Firmware
Cisco SG250-48HP Firmware<=2.5.0.90
Cisco SG250-48HP Firmware
Cisco SF350-48 Firmware<=2.5.0.90
Cisco SF350-48P Firmware
Cisco SF350-48P Firmware<=2.5.0.90
Cisco SF350-48P Firmware
Cisco SF350-48MP Firmware<=2.5.0.90
Cisco SF350-48MP Firmware
Cisco SG350-10 Firmware<=2.5.0.90
Cisco SG350-10P
Cisco SG350-10P<=2.5.0.90
Cisco SG350-10P
Cisco SG350-10MP Firmware<=2.5.0.90
Cisco SG350-10MP
Cisco SG355-10MP Firmware<=2.5.0.90
Cisco SG355-10MP Firmware
Cisco SG350-28 Firmware<=2.5.0.90
Cisco SG350-28
Cisco SG350-28P Firmware<=2.5.0.90
Cisco SG350-28P
Cisco SG350-28MP Firmware<=2.5.0.90
Cisco SG350-28MP
Cisco SX550X-16FT Firmware<=2.5.0.90
Cisco SX550X-16FT
Cisco SX550X-24FT Firmware<=2.5.0.90
Cisco SX550X-24FT
Cisco Sx550x-12ft Firmware<=2.5.0.90
Cisco Sx550x-12ft
Cisco SX550X-24FT Firmware<=2.5.0.90
Cisco SX550X-24
Cisco SX550X-52 Firmware<=2.5.0.90
Cisco SX550X-52
Cisco SG550X-24 Firmware<=2.5.0.90
Cisco SG550X-24 Firmware
Cisco SG550X-24P Firmware<=2.5.0.90
Cisco SG550X-24P Firmware
Cisco SG550X-24MP Firmware<=2.5.0.90
Cisco SG550X-24MP
Cisco SG550X-24MPP Firmware<=2.5.0.90
Cisco SG550X-24MPP
Cisco SG550X-48MP Firmware<=2.5.0.90
Cisco SG550X-48T
Cisco SG550X-48P Firmware<=2.5.0.90
Cisco SG550X-48P
Cisco SG550X-48MP Firmware<=2.5.0.90
Cisco SG550X-48MP
Cisco SF550X-24 Firmware<=2.5.0.90
Cisco SF550X-24 Firmware
Cisco SF550X-24P Firmware<=2.5.0.90
Cisco SF550X-24P
Cisco SF550X-48 Firmware<=2.5.0.90
Cisco SF550X-48
Cisco SF550X-48P Firmware<=2.5.0.90
Cisco SG550X-48P
Cisco SG550X-48MP Firmware<=2.5.0.90
Cisco SF550X-48MP

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2020-3121?

    The severity of CVE-2020-3121 is classified as medium due to its potential for Cross-Site Scripting (XSS) attacks.

  • How do I fix CVE-2020-3121?

    To fix CVE-2020-3121, you should upgrade the affected Cisco Small Business Smart and Managed Switches firmware to versions beyond 2.5.0.90.

  • What devices are affected by CVE-2020-3121?

    CVE-2020-3121 affects various Cisco products, including SG250, SG250X, SF350, SG350X, and Sx550 switch models running firmware version 2.5.0.90 or earlier.

  • Can CVE-2020-3121 be exploited remotely?

    Yes, CVE-2020-3121 can be exploited remotely by an unauthenticated attacker through the web-based management interface.

  • What type of attack is associated with CVE-2020-3121?

    CVE-2020-3121 is associated with Cross-Site Scripting (XSS) attacks, allowing attackers to execute arbitrary scripts in the user's browser.

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