CVE-2016-10521 Regular Expression Denial of Service in jshamcrest
Attackers can cause denial of service in jshamcrest by submitting malicious input to the email validator, affecting applications using this npm module.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-10521?
CVE-2016-10521 is a high-severity denial of service vulnerability in HackerOne jshamcrest node module, published on 31 May 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
jshamcrest is vulnerable to regular expression denial of service (ReDoS) when certain types of user input is passed in to the emailAddress validator.
Which versions are affected by CVE-2016-10521?
2 open source packages ship an affected version, including jshamcrest. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
jshamcrest npm | All versions to 0.7.1 | None |
jshamcrest npm | All versions to 0.7.1 | None |
Products include Jshamcrest Project Jshamcrest.
How do I fix CVE-2016-10521?
No fix has been published for CVE-2016-10521 yet. Limit exposure of the affected software until one is available.
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-2016-10521 being exploited?
There is no known exploitation of CVE-2016-10521 in the wild and no public exploit code.
Sources
Also known as GHSA-xj62-87pg-vcv3.