CVE-2018-0093 Cross-site scripting in Cisco Web Security Appliance

Medium 6.1 Published 18 Jan 2018 Updated 2 Dec 2024

Unauthenticated remote attackers can execute arbitrary scripts or access sensitive data via reflected XSS in the Cisco WSA management 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-2018-0093?

CVE-2018-0093 is a medium-severity cross-site scripting vulnerability in Cisco Web Security Appliance, published on 18 Jan 2018. 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 Web Security Appliance (WSA) could allow an unauthenticated, 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. Cisco Bug IDs: CSCvf37392.

Weakness: CWE-79

Which versions are affected by CVE-2018-0093?

It affects 1 product.

Products include Cisco Web Security Appliance.

How do I fix CVE-2018-0093?

No fix has been published for CVE-2018-0093 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-2018-0093 being exploited?

There is no known exploitation of CVE-2018-0093 in the wild and no public exploit code.

All Cisco Web Security Appliance vulnerabilities

Sources

Also known as GHSA-hg49-9432-gc83.