CVE-2019-3874 Denial of service in kernel

What is CVE-2019-3874?

CVE-2019-3874 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 25 Mar 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The SCTP socket buffer used by a userspace application is not accounted by the cgroups subsystem. An attacker can use this flaw to cause a denial of service attack. Kernel 3.10.x and 4.18.x branches are believed to be vulnerable.

Weakness: CWE-400

Which versions are affected by CVE-2019-3874?

It affects 9 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Netapp Active Iq Unified Manager for Vmware Vsphere, Netapp Cn1610 Firmware, Netapp Hci Management Node and 3 more.

How do I fix CVE-2019-3874?

Apply the vendor's patch.

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-2019-3874 being exploited?

There is no known exploitation of CVE-2019-3874 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2019-3874, GHSA-qvwq-hwx3-6297, UBUNTU-CVE-2019-3874.