CVE-2019-5419 Denial of Service Vulnerability in Action View

Q: Which versions are affected by CVE-2019-5419?

10 open source packages ship an affected version, including actionview. It affects 6 products.

Q: Is CVE-2019-5419 being exploited?

There is no known exploitation of CVE-2019-5419 in the wild and no public exploit code.

Q: How do I fix CVE-2019-5419?

Upgrade actionview to a fixed version for your release line: 4.2.11.1, 5.0.7.2, 5.1.6.2 or 5.2.2.1.

High 7.5 Published 27 Mar 2019 Updated 4 Aug 2024

Attackers can cause a denial of service in Ruby on Rails by sending specially crafted accept headers, leading to high CPU usage and server unresponsiveness.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-5419?

CVE-2019-5419 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 27 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

There is a possible denial of service vulnerability in Action View (Rails) <5.2.2.1, <5.1.6.2, <5.0.7.2, <4.2.11.1 where specially crafted accept headers can cause action view to consume 100% cpu and make the server unresponsive.

Weakness: CWE-770, CWE-400

Which versions are affected by CVE-2019-5419?

10 open source packages ship an affected version, including actionview. It affects 6 products.

Package	Affected	Fixed in
`actionview` RubyGems	From `4.0.0`	`4.2.11.1`
`actionview` RubyGems	From `4.0.0`	`4.2.11.1`
`actionview` RubyGems	From `5.0.0`	`5.0.7.2`
`actionview` RubyGems	From `5.0.0`	`5.0.7.2`
`actionview` RubyGems	From `5.1.0`	`5.1.6.2`
`actionview` RubyGems	From `5.1.0`	`5.1.6.2`

4 more packages

`actionview` RubyGems	From `5.2.0`	`5.2.2.1`
`actionview` RubyGems	From `5.2.0`	`5.2.2.1`
`actionview` RubyGems	From `6.0.0.beta1`	`6.0.0.beta3`
`actionview` RubyGems	From `6.0.0.beta1`	`6.0.0.beta3`

Products include Debian Debian Linux, Fedoraproject Fedora, Opensuse Leap, Redhat Cloudforms, Redhat Software Collections, Rubyonrails Rails.

How do I fix CVE-2019-5419?

Upgrade actionview to a fixed version for your release line: 4.2.11.1, 5.0.7.2, 5.1.6.2 or 5.2.2.1.

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-2019-5419 being exploited?

There is no known exploitation of CVE-2019-5419 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2019-5419, GHSA-m63j-wh5w-c252, UBUNTU-CVE-2019-5419.