CVE-2019-12718 Cisco Small Business Smart and Managed Switches Cross-Site Scripting Vulnerability

Medium 6.1 Published Updated

An unauthenticated remote attacker can execute arbitrary script code or access sensitive information via a malicious link in the web interface.

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-2019-12718?

CVE-2019-12718 is a medium-severity cross-site scripting vulnerability in Cisco Small Business 200 Series Smart Switches, published on 16 Oct 2019. 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 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 web-based interface. The vulnerability is due to insufficient validation of user-supplied input by the web-based interface of the affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a malicious link and subsequently access a specific web interface 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-2019-12718?

It affects 108 products.

Products include Cisco Sf200-24 Firmware, Cisco Sf200-24fp Firmware, Cisco Sf200-24p Firmware, Cisco Sf200-48 Firmware, Cisco Sf200-48p Firmware, Cisco Sf200e-24 Firmware and 102 more.

How do I fix CVE-2019-12718?

No fix has been published for CVE-2019-12718 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-2019-12718 being exploited?

There is no known exploitation of CVE-2019-12718 in the wild and no public exploit code.

Sources

Also known as GHSA-f624-83vj-56hf.

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