CVE-2020-3121 Cisco Small Business Smart and Managed Switches Cross-Site Scripting Vulnerability
An unauthenticated remote attacker can execute arbitrary script code or access sensitive browser-based information by tricking a user into clicking a malicious link.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-3121?
CVE-2020-3121 is a medium-severity cross-site scripting vulnerability in Cisco 550X Series Stackable Managed Switches, published on 26 Jan 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2020-3121?
It affects 45 products.
Products include Cisco Sf350-48 Firmware, Cisco Sf350-48mp Firmware, Cisco Sf350-48p Firmware, Cisco Sf550x-24 Firmware, Cisco Sf550x-24p Firmware, Cisco Sf550x-48 Firmware and 39 more.
How do I fix CVE-2020-3121?
No fix has been published for CVE-2020-3121 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2020-3121 being exploited?
There is no known exploitation of CVE-2020-3121 in the wild and no public exploit code.
Sources
Also known as GHSA-p382-hh5c-h4rq.