CVE-2023-33971 Formcreator vulnerable to stored XSS from ##FULLFORM##
Stored XSS in GLPI Formcreator allows arbitrary JavaScript execution in admin contexts via the ##FULLFORM## tag.
- 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-2023-33971?
CVE-2023-33971 is a medium-severity cross-site scripting vulnerability in pluginsGLPI formcreator, published on 31 May 2023. 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
Formcreator is a GLPI plugin which allow creation of custom forms and the creation of one or more tickets when the form is filled. A probable stored cross-site scripting vulnerability is present in Formcreator 2.13.5 and prior via the use of the use of `##FULLFORM##` for rendering. This could result in arbitrary javascript code execution in an admin/tech context. A patch is unavailable as of time of publication. As a workaround, one may use a regular expression to remove `< > "` in all fields.
Weakness: CWE-79
Which versions are affected by CVE-2023-33971?
It affects 1 product.
Products include Teclib-Edition Form Creator.
How do I fix CVE-2023-33971?
No fix has been published for CVE-2023-33971 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-2023-33971 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-33971 exists.
Sources
Also known as GHSA-777g-3848-8r3g.