GHSA-fvwr-h9xh-m6wc Denial of Service in @commercial/subtext
Attackers can cause Denial of Service by sending large chunked payloads that bypass size limits, exhausting system resources.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-fvwr-h9xh-m6wc?
GHSA-fvwr-h9xh-m6wc is a denial of service vulnerability in @commercial/subtext, 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 @commercial/subtext prior to 5.1.1 are vulnerable to Denial of Service (DoS). The package fails to enforce the maxBytes configuration for payloads with chunked encoding that are written to the file system. This allows attackers to send requests with arbitrary payload sizes, which may exhaust system resources leading to Denial of Service.
Recommendation
Upgrade to version 5.1.1 or later.
Which versions are affected by GHSA-fvwr-h9xh-m6wc?
2 open source packages ship an affected version, including @commercial/subtext.
| Package | Affected | Fixed in |
|---|---|---|
@commercial/subtext npm | All versions | 5.1.1 |
@commercial/subtext npm | All versions | 5.1.1 |
How do I fix GHSA-fvwr-h9xh-m6wc?
Upgrade @commercial/subtext to 5.1.1 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-fvwr-h9xh-m6wc being exploited?
There is no known exploitation of GHSA-fvwr-h9xh-m6wc in the wild and no public exploit code.