CVE-2018-20169 Denial of service in n/a
Medium 6.8
Published
Updated
Check this codebase for CVE-2018-20169 and fix it if it is affected.
What it is: CVE-2018-20169 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 17 Dec 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-20169 in the wild and no public exploit code.
Affected product: Canonical Ubuntu Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2018-20169/ (Markdown: https://insights.sbomify.com/CVE-2018-20169/index.md)
A flaw in the Linux kernel USB subsystem mishandles size checks, allowing attackers to cause a denial of service via malicious descriptors.
- 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-2018-20169?
CVE-2018-20169 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 17 Dec 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in the Linux kernel before 4.19.9. The USB subsystem mishandles size checks during the reading of an extra descriptor, related to __usb_get_extra_descriptor in drivers/usb/core/usb.c.
Weakness: CWE-400
Which versions are affected by CVE-2018-20169?
It affects 3 products.
Linux distribution packages (40)
kernel-rt Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel-rt-debug Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel-rt-debug-debuginfo Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel-rt-debug-devel Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel-rt-debuginfo Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel-rt-debuginfo-common-x86_64 Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel-rt-devel Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel-rt-doc Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel-rt-firmware Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel-rt-trace Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel-rt-trace-debuginfo Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel-rt-trace-devel Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel-rt-vanilla Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel-rt-vanilla-debuginfo Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel-rt-vanilla-devel Red Hat:enterprise_mrg:2:server:el6 | All versions | 1:3.10.0-693.69.1.rt56.667.el6rt |
kernel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-abi-whitelists Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-debug Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-debug-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-debug-devel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-devel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-doc Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-headers Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-tools Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-tools-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-tools-libs Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-tools-libs-devel Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
perf Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
perf-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
python-perf Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
python-perf-debuginfo Red Hat:rhel_aus:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel Red Hat:rhel_e4s:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-abi-whitelists Red Hat:rhel_e4s:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-bootwrapper Red Hat:rhel_e4s:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-debug Red Hat:rhel_e4s:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-debug-debuginfo Red Hat:rhel_e4s:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-debug-devel Red Hat:rhel_e4s:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
kernel-debuginfo Red Hat:rhel_e4s:7.4::server | All versions | 0:3.10.0-693.69.1.el7 |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel.
How do I fix CVE-2018-20169?
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-2018-20169 being exploited?
There is no known exploitation of CVE-2018-20169 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as AZL-34325, AZL-34851, DEBIAN-CVE-2018-20169, GHSA-xv8v-5726-pq4v, RHSA-2020:2770, RHSA-2020:2777 and 1 more.