GHSA-xf5p-87ch-gxw2 Marked ReDoS due to email addresses being evaluated in quadratic time
Attackers can cause resource exhaustion and crash the application by submitting specially crafted email addresses to the marked library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-xf5p-87ch-gxw2?
GHSA-xf5p-87ch-gxw2 is a denial of service vulnerability in marked, published on 5 Jun 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Versions of marked from 0.3.14 until 0.6.2 are vulnerable to Regular Expression Denial of Service. Email addresses may be evaluated in quadratic time, allowing attackers to potentially crash the node process due to resource exhaustion.
Recommendation
Upgrade to version 0.6.2 or later.
Which versions are affected by GHSA-xf5p-87ch-gxw2?
2 open source packages ship an affected version, including marked.
| Package | Affected | Fixed in |
|---|---|---|
marked npm | From 0.3.14 | 0.6.2 |
marked npm | From 0.3.14 | 0.6.2 |
How do I fix GHSA-xf5p-87ch-gxw2?
Upgrade marked to 0.6.2 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 GHSA-xf5p-87ch-gxw2 being exploited?
There is no known exploitation of GHSA-xf5p-87ch-gxw2 in the wild and no public exploit code.