CVE-2021-36793 CSRF token exposure in TYPO3 extension
An attacker can obtain sensitive session identifiers from HTML output in the TYPO3 Extbase Yaml Routes extension when the CsrfTokenViewHelper is used.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-36793?
CVE-2021-36793 is a high-severity vulnerability in n/a, published on 13 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The routes (aka Extbase Yaml Routes) extension before 2.1.1 for TYPO3, when CsrfTokenViewHelper is used, allows Sensitive Information Disclosure because a session identifier is unsafely present in HTML output.
Weakness: CWE-200
Which versions are affected by CVE-2021-36793?
2 open source packages ship an affected version, including lms/routes. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
lms/routes Packagist | All versions | 2.1.1 |
lms/routes Packagist | All versions | 2.1.1 |
Products include Routes Project Routes.
How do I fix CVE-2021-36793?
Upgrade lms/routes to 2.1.1 or later.
Is CVE-2021-36793 being exploited?
There is no known exploitation of CVE-2021-36793 in the wild and no public exploit code.
Sources
Also known as GHSA-vpw5-grxx-v396.