CVE-2019-5108 Denial of service in Linux kernel
An attacker can cause denial of service in the Linux kernel by forging authentication packets to trigger improper IAPP location updates.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-5108?
CVE-2019-5108 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 23 Dec 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An exploitable denial-of-service vulnerability exists in the Linux kernel prior to mainline 5.3. An attacker could exploit this vulnerability by triggering AP to send IAPP location updates for stations before the required authentication process has completed. This could lead to different denial-of-service scenarios, either by causing CAM table attacks, or by leading to traffic flapping if faking already existing clients in other nearby APs of the same wireless infrastructure. An attacker can forge Authentication and Association Request packets to trigger this vulnerability.
Which versions are affected by CVE-2019-5108?
It affects 16 products.
Linux distribution packages (17)
kernel-rt Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-debug Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-debug-debuginfo Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-debug-devel Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-debug-kvm Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-debug-kvm-debuginfo Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-debuginfo Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-debuginfo-common-x86_64 Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-devel Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-doc Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-kvm Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-kvm-debuginfo Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-trace Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-trace-debuginfo Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-trace-devel Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-trace-kvm Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
kernel-rt-trace-kvm-debuginfo Red Hat:rhel_extras_rt:7 | All versions | 0:3.10.0-1127.19.1.rt56.1116.el7 |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Netapp 8300 Firmware, Netapp 8700 Firmware, Netapp A400 Firmware and 10 more.
How do I fix CVE-2019-5108?
Upgrade to a fixed version.
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-2019-5108 being exploited?
There is no known exploitation of CVE-2019-5108 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2019-5108, GHSA-m32p-568p-hpc9, RHBA-2020:3527, UBUNTU-CVE-2019-5108.