CVE-2021-38623 Improper Resource Shutdown or Release in TYPO3 extension
An attacker can cause a denial of service by exhausting disk space through the FAL API in the TYPO3 deferred image processing extension.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-38623?
CVE-2021-38623 is a high-severity denial of service 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 deferred_image_processing (aka Deferred image processing) extension before 1.0.2 for TYPO3 allows Denial of Service via the FAL API because of /var/transient disk consumption.
Weakness: CWE-404
Which versions are affected by CVE-2021-38623?
2 open source packages ship an affected version, including webcoast/deferred-image-processing. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
webcoast/deferred-image-processing Packagist | All versions | 1.0.2 |
webcoast/deferred-image-processing Packagist | All versions | 1.0.2 |
Products include Deferred Image Processing Project Deferred Image Processing.
How do I fix CVE-2021-38623?
Upgrade webcoast/deferred-image-processing to 1.0.2 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-38623 being exploited?
There is no known exploitation of CVE-2021-38623 in the wild and no public exploit code.
Sources
Also known as GHSA-34jq-548x-m2x9.