CVE-2020-14364 Memory corruption in QEMU
Medium 5.0
Published
Updated
Check this codebase for CVE-2020-14364 and fix it if it is affected.
What it is: CVE-2020-14364 is a medium-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 31 Aug 2020. 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-2020-14364 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-2020-14364/ (Markdown: https://insights.sbomify.com/CVE-2020-14364/index.md)
A guest user can trigger out-of-bounds access in QEMU's USB emulator to crash the host or execute arbitrary code with host privileges.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-14364?
CVE-2020-14364 is a medium-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 31 Aug 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.
Which versions are affected by CVE-2020-14364?
It affects 7 products.
Linux distribution packages (40)
SLOF Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:20191022-3.git899d9883.module+el8.2.0+5449+efc036dd |
hivex Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:1.3.18-20.module+el8.2.0+5588+63a201c3 |
hivex-debuginfo Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:1.3.18-20.module+el8.2.0+5588+63a201c3 |
hivex-debugsource Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:1.3.18-20.module+el8.2.0+5588+63a201c3 |
hivex-devel Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:1.3.18-20.module+el8.2.0+5588+63a201c3 |
libguestfs Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-bash-completion Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-benchmarking Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-benchmarking-debuginfo Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-debuginfo Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-debugsource Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-devel Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-gfs2 Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-gobject Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-gobject-debuginfo Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-gobject-devel Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-inspect-icons Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-java Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-java-debuginfo Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-java-devel Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-javadoc Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-man-pages-ja Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-man-pages-uk Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-rescue Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-rsync Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-tools Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-tools-c Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-tools-c-debuginfo Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libguestfs-winsupport Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:8.2-1.module+el8.2.0+5590+82cd80df |
libguestfs-xfs Red Hat:advanced_virtualization:8.2::el8 | All versions | 1:1.40.2-24.module+el8.2.1+7154+47ffd890 |
libiscsi Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:1.18.0-8.module+el8.2.0+4793+b09dd2fb |
libiscsi-debuginfo Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:1.18.0-8.module+el8.2.0+4793+b09dd2fb |
libiscsi-debugsource Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:1.18.0-8.module+el8.2.0+4793+b09dd2fb |
libiscsi-devel Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:1.18.0-8.module+el8.2.0+4793+b09dd2fb |
libiscsi-utils Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:1.18.0-8.module+el8.2.0+4793+b09dd2fb |
libiscsi-utils-debuginfo Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:1.18.0-8.module+el8.2.0+4793+b09dd2fb |
libnbd Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:1.2.2-1.module+el8.2.0+5644+32ac38d4 |
libnbd-debuginfo Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:1.2.2-1.module+el8.2.0+5644+32ac38d4 |
libnbd-debugsource Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:1.2.2-1.module+el8.2.0+5644+32ac38d4 |
libnbd-devel Red Hat:advanced_virtualization:8.2::el8 | All versions | 0:1.2.2-1.module+el8.2.0+5644+32ac38d4 |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Opensuse Leap, Qemu Qemu, Redhat Enterprise Linux and 1 more.
How do I fix CVE-2020-14364?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-14364 being exploited?
There is no known exploitation of CVE-2020-14364 in the wild and no public exploit code.
Public exploit code: 2 proofs of concept on GitHub.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as ALPINE-CVE-2020-14364, DEBIAN-CVE-2020-14364, GHSA-fq9g-vccc-q7c7, RHSA-2020:4047, RHSA-2020:4048, RHSA-2020:4049 and 15 more.