CVE-2021-1127 Cisco Enterprise NFV Infrastructure Software Cross-Site Scripting Vulnerability

Medium 5.4 Published Updated

An authenticated attacker can inject malicious scripts into log files, leading to arbitrary code execution or data theft when viewed by other users.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2021-1127?

CVE-2021-1127 is a medium-severity cross-site scripting vulnerability in Cisco Enterprise NFV Infrastructure Software, published on 13 Jan 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A vulnerability in the web-based management interface of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface. The vulnerability is due to improper input validation of log file content stored on the affected device. An attacker could exploit this vulnerability by modifying a log file with malicious code and getting a user to view the modified log file. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or to access sensitive, browser-based information.

Weakness: CWE-79

Which versions are affected by CVE-2021-1127?

It affects 1 product.

Products include Cisco Enterprise Nfv Infrastructure Software.

How do I fix CVE-2021-1127?

No fix has been published for CVE-2021-1127 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-2021-1127 being exploited?

There is no known exploitation of CVE-2021-1127 in the wild and no public exploit code.

Sources

Also known as GHSA-4r7v-vq9j-hv62.

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