CVE-2018-14645 Denial of service in haproxy
High 7.5
Published
Updated
Check this codebase for CVE-2018-14645 and fix it if it is affected.
What it is: CVE-2018-14645 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 21 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-14645 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-2018-14645/ (Markdown: https://insights.sbomify.com/CVE-2018-14645/index.md)
A remote attacker can cause a denial of service in HAProxy via an out-of-bounds read in the HTTP/2 HPACK decoder.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-14645?
CVE-2018-14645 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 21 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw was discovered in the HPACK decoder of HAProxy, before 1.8.14, that is used for HTTP/2. An out-of-bounds read access in hpack_valid_idx() resulted in a remote crash and denial of service.
Weakness: CWE-125
Which versions are affected by CVE-2018-14645?
It affects 5 products.
Linux distribution packages (31)
atomic-openshift Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f8b38ff.el7 |
atomic-openshift-clients Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f8b38ff.el7 |
atomic-openshift-clients-redistributable Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f8b38ff.el7 |
atomic-openshift-cluster-capacity Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f8b38ff.el7 |
atomic-openshift-docker-excluder Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f8b38ff.el7 |
atomic-openshift-dockerregistry Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.353.1da3b27.el7 |
atomic-openshift-excluder Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f8b38ff.el7 |
atomic-openshift-federation-services Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f8b38ff.el7 |
atomic-openshift-master Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f8b38ff.el7 |
atomic-openshift-node Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f8b38ff.el7 |
atomic-openshift-pod Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f8b38ff.el7 |
atomic-openshift-sdn-ovs Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f8b38ff.el7 |
atomic-openshift-service-catalog Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f8b38ff.el7 |
atomic-openshift-template-service-broker Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f8b38ff.el7 |
atomic-openshift-tests Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f8b38ff.el7 |
atomic-openshift-utils Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f0ebfaa.el7 |
atomic-openshift-web-console Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.277.be8dbdd.el7 |
golang-github-prometheus-node_exporter Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.1063.df94c95.el7 |
haproxy Red Hat:openshift:3.9::el7 | All versions | 0:1.8.14-2.el7 |
haproxy-debuginfo Red Hat:openshift:3.9::el7 | All versions | 0:1.8.14-2.el7 |
haproxy18 Red Hat:openshift:3.9::el7 | All versions | 0:1.8.14-2.el7 |
openshift-ansible Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f0ebfaa.el7 |
openshift-ansible-docs Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f0ebfaa.el7 |
openshift-ansible-playbooks Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f0ebfaa.el7 |
openshift-ansible-roles Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.0.f0ebfaa.el7 |
prometheus-node-exporter Red Hat:openshift:3.9::el7 | All versions | 0:3.9.60-1.git.1063.df94c95.el7 |
rubygem-ffi Red Hat:openshift:3.9::el7 | All versions | 0:1.9.25-4.el7_5 |
rubygem-ffi-debuginfo Red Hat:openshift:3.9::el7 | All versions | 0:1.9.25-4.el7_5 |
rh-haproxy18-haproxy Red Hat:rhel_software_collections:3::el7 | All versions | 0:1.8.4-3.el7 |
rh-haproxy18-haproxy-debuginfo Red Hat:rhel_software_collections:3::el7 | All versions | 0:1.8.4-3.el7 |
rh-haproxy18-haproxy-syspaths Red Hat:rhel_software_collections:3::el7 | All versions | 0:1.8.4-3.el7 |
Products include Canonical Ubuntu Linux, Haproxy Haproxy, Redhat Enterprise Linux, Redhat Openshift, Redhat Openshift Container Platform.
How do I fix CVE-2018-14645?
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-2018-14645 being exploited?
There is no known exploitation of CVE-2018-14645 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2018-14645, GHSA-gr9c-vx25-2fh5, RHBA-2019:0028, RHSA-2018:2882, UBUNTU-CVE-2018-14645, USN-3780-1.