GHSA-q3w9-g74q-vp5f Denial of Service in express-fileupload
An attacker can cause server delays and potential denial of service by sending requests with large filenames consisting of dots.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-q3w9-g74q-vp5f?
GHSA-q3w9-g74q-vp5f is a denial of service vulnerability in express-fileupload, published on 3 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Versions of express-fileupload prior to 1.1.6-alpha.6 are vulnerable to Denial of Service. The package causes server responses to be delayed (up to 30s in internal testing) if the request contains a large filename of . characters.
Recommendation
Upgrade to version 1.1.6-alpha.6 or later.
Which versions are affected by GHSA-q3w9-g74q-vp5f?
2 open source packages ship an affected version, including express-fileupload.
| Package | Affected | Fixed in |
|---|---|---|
express-fileupload npm | All versions | 1.1.6-alpha.6 |
express-fileupload npm | All versions | 1.1.6-alpha.6 |
How do I fix GHSA-q3w9-g74q-vp5f?
Upgrade express-fileupload to 1.1.6-alpha.6 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 GHSA-q3w9-g74q-vp5f being exploited?
There is no known exploitation of GHSA-q3w9-g74q-vp5f in the wild and no public exploit code.