CVE-2017-17454 Cross-site scripting in n/a
An attacker can execute arbitrary scripts via invalid UTF-8 characters in Mahara, potentially leading to session hijacking or data theft.
- 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-2017-17454?
CVE-2017-17454 is a medium-severity cross-site scripting vulnerability in Mahara Mahara, published on 20 Feb 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Mahara 16.10 before 16.10.7 and 17.04 before 17.04.5 and 17.10 before 17.10.2 have a Cross Site Scripting (XSS) vulnerability when a user enters invalid UTF-8 characters. These are now going to be discarded in Mahara along with NULL characters and invalid Unicode characters. Mahara will also avoid direct $_GET and $_POST usage where possible, and instead use param_exists() and the correct param_*() function to fetch the expected value.
Weakness: CWE-79
Which versions are affected by CVE-2017-17454?
It affects 1 product.
Products include Mahara Mahara.
How do I fix CVE-2017-17454?
No fix has been published for CVE-2017-17454 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-2017-17454 being exploited?
There is no known exploitation of CVE-2017-17454 in the wild and no public exploit code.
Other vulnerabilities in Mahara Mahara
Sources
Also known as GHSA-6q4p-5jg7-p386.