CVE-2014-7821 Denial of service in n/a
Medium 4.0
Published
Updated
Check this codebase for CVE-2014-7821 and fix it if it is affected.
What it is: CVE-2014-7821 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 24 Nov 2014. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2014-7821 in the wild and no public exploit code.
Affected product: Fedoraproject Fedora. 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-2014-7821/ (Markdown: https://insights.sbomify.com/CVE-2014-7821/index.md)
Remote authenticated users can crash OpenStack Neutron by submitting a crafted DNS configuration value, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2014-7821?
CVE-2014-7821 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 24 Nov 2014. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
OpenStack Neutron before 2014.1.4 and 2014.2.x before 2014.2.1 allows remote authenticated users to cause a denial of service (crash) via a crafted dns_nameservers value in the DNS configuration.
Which versions are affected by CVE-2014-7821?
It affects 3 products.
Linux distribution packages (40)
openstack-neutron Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-bigswitch Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-brocade Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-cisco Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-hyperv Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-linuxbridge Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-mellanox Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-metaplugin Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-metering-agent Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-midonet Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-ml2 Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-nec Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-nicira Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-openvswitch Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-plumgrid Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-ryu Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron-vpn-agent Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
python-neutron Red Hat:openstack:4::el6 | All versions | 0:2013.2.4-6.el6ost |
openstack-neutron Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-bigswitch Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-brocade Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-cisco Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-embrane Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-hyperv Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-ibm Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-linuxbridge Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-mellanox Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-metaplugin Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-metering-agent Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-midonet Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-ml2 Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-nec Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-nuage Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-ofagent Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-oneconvergence-nvsd Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-openvswitch Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-plumgrid Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-ryu Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-vmware Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
openstack-neutron-vpn-agent Red Hat:openstack:5::el6 | All versions | 0:2014.1.3-12.el6ost |
Products include Fedoraproject Fedora, Openstack Neutron, Redhat Openstack.
How do I fix CVE-2014-7821?
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-2014-7821 being exploited?
There is no known exploitation of CVE-2014-7821 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as DEBIAN-CVE-2014-7821, GHSA-3v86-wqpm-qc9x, RHSA-2014:1938, RHSA-2014:1942, RHSA-2015:0044.