CVE-2020-11036 XSS in GLPI

High 7.6 Published Updated

Stored XSS in GLPI allows attackers to execute scripts in administrators' browsers via crafted user names or comments, potentially leading to session hijacking.

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
Available

What is CVE-2020-11036?

CVE-2020-11036 is a high-severity cross-site scripting vulnerability in Glpi-Project Glpi, published on 5 May 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

In GLPI before version 9.4.6 there are multiple related stored XSS vulnerabilities. The package is vulnerable to Stored XSS in the comments of items in the Knowledge base. Adding a comment with content "<script>alert(1)</script>" reproduces the attack. This can be exploited by a user with administrator privileges in the User-Agent field. It can also be exploited by an outside party through the following steps: 1. Create a user with the surname `" onmouseover="alert(document.cookie)` and an empty first name. 2. With this user, create a ticket 3. As an administrator (or other privileged user) open the created ticket 4. On the "last update" field, put your mouse on the name of the user 5. The XSS fires This is fixed in version 9.4.6.

Weakness: CWE-79

Which versions are affected by CVE-2020-11036?

It affects 1 product.

Products include Glpi-Project Glpi.

How do I fix CVE-2020-11036?

Upgrade to a fixed version.

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-2020-11036 being exploited?

There is no known exploitation of CVE-2020-11036 in the wild and no public exploit code.

All Glpi-Project Glpi vulnerabilities

Sources

Also known as GHSA-3g3h-rwhr-7385, UBUNTU-CVE-2020-11036.

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