CVE-2012-4423 Null dereference in n/a
Medium 5.0
Published
Updated
Check this codebase for CVE-2012-4423 and fix it if it is affected.
What it is: CVE-2012-4423 is a medium-severity vulnerability in Redhat Libvirt, published on 19 Nov 2012. 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-2012-4423 in the wild and no public exploit code.
Affected product: Redhat Libvirt. 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-2012-4423/ (Markdown: https://insights.sbomify.com/CVE-2012-4423/index.md)
Remote attackers can cause a denial of service in libvirt via crafted RPC calls triggering a NULL pointer dereference.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2012-4423?
CVE-2012-4423 is a medium-severity vulnerability in Redhat Libvirt, published on 19 Nov 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The virNetServerProgramDispatchCall function in libvirt before 0.10.2 allows remote attackers to cause a denial of service (NULL pointer dereference and segmentation fault) via an RPC call with (1) an event as the RPC number or (2) an RPC number whose value is in a "gap" in the RPC dispatch table.
Which versions are affected by CVE-2012-4423?
It affects 1 product.
Linux distribution packages (24)
libvirt Red Hat:enterprise_linux:6::client | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-client Red Hat:enterprise_linux:6::client | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-debuginfo Red Hat:enterprise_linux:6::client | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-devel Red Hat:enterprise_linux:6::client | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-lock-sanlock Red Hat:enterprise_linux:6::client | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-python Red Hat:enterprise_linux:6::client | All versions | 0:0.9.10-21.el6_3.5 |
libvirt Red Hat:enterprise_linux:6::computenode | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-client Red Hat:enterprise_linux:6::computenode | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-debuginfo Red Hat:enterprise_linux:6::computenode | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-devel Red Hat:enterprise_linux:6::computenode | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-lock-sanlock Red Hat:enterprise_linux:6::computenode | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-python Red Hat:enterprise_linux:6::computenode | All versions | 0:0.9.10-21.el6_3.5 |
libvirt Red Hat:enterprise_linux:6::server | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-client Red Hat:enterprise_linux:6::server | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-debuginfo Red Hat:enterprise_linux:6::server | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-devel Red Hat:enterprise_linux:6::server | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-lock-sanlock Red Hat:enterprise_linux:6::server | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-python Red Hat:enterprise_linux:6::server | All versions | 0:0.9.10-21.el6_3.5 |
libvirt Red Hat:enterprise_linux:6::workstation | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-client Red Hat:enterprise_linux:6::workstation | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-debuginfo Red Hat:enterprise_linux:6::workstation | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-devel Red Hat:enterprise_linux:6::workstation | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-lock-sanlock Red Hat:enterprise_linux:6::workstation | All versions | 0:0.9.10-21.el6_3.5 |
libvirt-python Red Hat:enterprise_linux:6::workstation | All versions | 0:0.9.10-21.el6_3.5 |
Products include Redhat Libvirt.
How do I fix CVE-2012-4423?
Upgrade to a fixed version.
Is CVE-2012-4423 being exploited?
There is no known exploitation of CVE-2012-4423 in the wild and no public exploit code.
Other vulnerabilities in Redhat Libvirt
Sources
Also known as DEBIAN-CVE-2012-4423, GHSA-82q7-xh57-cm62, RHSA-2012:1359.