CVE-2017-16137 Regular Expression Denial of Service in debug
An attacker can cause a denial of service in the Node.js debug module by sending large untrusted input to the o formatter, blocking execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-16137?
CVE-2017-16137 is a medium-severity denial of service vulnerability in HackerOne debug node module, published on 7 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The debug module is vulnerable to regular expression denial of service when untrusted user input is passed into the o formatter. It takes around 50k characters to block for 2 seconds making this a low severity issue.
Weakness: CWE-400
Which versions are affected by CVE-2017-16137?
8 open source packages ship an affected version, including debug. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
debug npm | All versions | 2.6.9 |
debug npm | All versions | 2.6.9 |
debug npm | From 3.0.0 | 3.1.0 |
debug npm | From 3.0.0 | 3.1.0 |
debug npm | From 3.2.0 | 3.2.7 |
debug npm | From 3.2.0 | 3.2.7 |
2 more packages
debug npm | From 4.0.0 | 4.3.1 |
debug npm | From 4.0.0 | 4.3.1 |
Products include Debug Project Debug.
How do I fix CVE-2017-16137?
Upgrade debug to a fixed version for your release line: 2.6.9, 3.1.0, 3.2.7 or 4.3.1.
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-2017-16137 being exploited?
There is no known exploitation of CVE-2017-16137 in the wild and no public exploit code.
Other vulnerabilities in HackerOne debug node module
Sources
Also known as AZL-43792, AZL-43819, AZL-44400, AZL-44772, CLSA-2026-1772928825, CLSA-2026-1773101693 and 14 more.