CVE-2017-2670 Moderate severity vulnerability that affects io.undertow:undertow-core
An attacker can cause a denial of service in Undertow by triggering an infinite loop via non-clean TCP closes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-2670?
CVE-2017-2670 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 27 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
It was found in Undertow before 1.3.28 that with non-clean TCP close, the Websocket server gets into infinite loop on every IO thread, effectively causing DoS.
Weakness: CWE-835
Which versions are affected by CVE-2017-2670?
2 open source packages ship an affected version, including io.undertow:undertow-core. It affects 3 products.
| Package | Affected | Fixed in |
|---|---|---|
io.undertow:undertow-core Maven | All versions | 1.3.28 |
io.undertow:undertow-core Maven | All versions | 1.3.28 |
Products include Debian Debian Linux, Redhat Jboss Enterprise Application Platform, Redhat Undertow.
How do I fix CVE-2017-2670?
Upgrade io.undertow:undertow-core to 1.3.28 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-2017-2670 being exploited?
There is no known exploitation of CVE-2017-2670 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2017-2670, GHSA-3x7h-5hfr-hvjm, UBUNTU-CVE-2017-2670.