CVE-2016-4056 TYPO3 Backend component Cross-site scripting (XSS) vulnerability
Remote attackers can inject arbitrary web script or HTML into the TYPO3 Backend via the module parameter when creating a bookmark.
- 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
- Available
What is CVE-2016-4056?
CVE-2016-4056 is a medium-severity cross-site scripting vulnerability in Typo3 Typo3, published on 23 Jan 2017. 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
Cross-site scripting (XSS) vulnerability in the Backend component in TYPO3 6.2.x before 6.2.19 allows remote attackers to inject arbitrary web script or HTML via the module parameter when creating a bookmark.
Weakness: CWE-79
Which versions are affected by CVE-2016-4056?
2 open source packages ship an affected version, including typo3/cms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
typo3/cms Packagist | From 6.2.0 | 6.2.19 |
typo3/cms Packagist | From 6.2.0 | 6.2.19 |
Products include Typo3 Typo3.
How do I fix CVE-2016-4056?
Upgrade typo3/cms to 6.2.19 or later.
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-2016-4056 being exploited?
There is no known exploitation of CVE-2016-4056 in the wild and no public exploit code.
Other vulnerabilities in Typo3 Typo3
- CVE-2009-0258 Indexed Search Engine for TYPO3 Command Execution via Metacharacter Injection
- CVE-2011-3583 Typo3 SQL injection due to faulty prepared statements
- CVE-2011-4628 Typo3 Authentication Bypass
- CVE-2023-24814 Persisted Cross-Site Scripting in Frontend Rendering in typo3
- CVE-2021-41113 Cross-Site-Request-Forgery in Backend URI Handling in Typo3
Sources
Also known as GHSA-ffcm-vhcw-p32r.