CVE-2018-7560 AWS Lambda parser is vulnerable to Regular Expression Denial of Service
An attacker can cause a denial of service in applications using the aws-lambda-multipart-parser library by sending a crafted multipart boundary string.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-7560?
CVE-2018-7560 is a high-severity denial of service vulnerability in n/a, published on 4 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
index.js in the Anton Myshenin aws-lambda-multipart-parser NPM package before 0.1.2 has a Regular Expression Denial of Service (ReDoS) issue via a crafted multipart/form-data boundary string.
Weakness: CWE-20
Which versions are affected by CVE-2018-7560?
2 open source packages ship an affected version, including aws-lambda-multipart-parser. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
aws-lambda-multipart-parser npm | All versions | 0.1.2 |
aws-lambda-multipart-parser npm | All versions | 0.1.2 |
Products include Aws-Lambda-Multipart-Parser Project Aws-Lambda-Multipart-Parser.
How do I fix CVE-2018-7560?
Upgrade aws-lambda-multipart-parser to 0.1.2 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-2018-7560 being exploited?
There is no known exploitation of CVE-2018-7560 in the wild and no public exploit code.
Sources
Also known as GHSA-6jqp-j69q-pm62.