CVE-2018-16469 Prototype Pollution in merge
Attackers can cause denial of service by modifying Object prototype properties via the merge.recursive function in the merge library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-16469?
CVE-2018-16469 is a high-severity denial of service vulnerability in HackerOne merge, published on 30 Oct 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The merge.recursive function in the merge package <1.2.1 can be tricked into adding or modifying properties of the Object prototype. These properties will be present on all objects allowing for a denial of service attack.
Which versions are affected by CVE-2018-16469?
2 open source packages ship an affected version, including merge. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
merge npm | All versions | 1.2.1 |
merge npm | All versions | 1.2.1 |
Products include Merge Project Merge.
How do I fix CVE-2018-16469?
Upgrade merge to 1.2.1 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 CVE-2018-16469 being exploited?
There is no known exploitation of CVE-2018-16469 in the wild and no public exploit code.
Other vulnerabilities in HackerOne merge
Sources
Also known as GHSA-f9cm-qmx5-m98h, ROOT-APP-NPM-CVE-2018-16469, UBUNTU-CVE-2018-16469.