CVE-2019-5736 Privilege escalation in n/a
High 8.6
Published
Updated
Check this codebase for CVE-2019-5736 and fix it if it is affected.
What it is: CVE-2019-5736 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 11 Feb 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-5736 exists.
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-2019-5736/ (Markdown: https://insights.sbomify.com/CVE-2019-5736/index.md)
Attackers with container access can overwrite the host runc binary to gain root privileges on the host system.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-5736?
CVE-2019-5736 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 11 Feb 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
runc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows attackers to overwrite the host runc binary (and consequently obtain host root access) by leveraging the ability to execute a command as root within one of these types of containers: (1) a new container with an attacker-controlled image, or (2) an existing container, to which the attacker previously had write access, that can be attached with docker exec. This occurs because of file-descriptor mishandling, related to /proc/self/exe.
Weakness: CWE-78
Which versions are affected by CVE-2019-5736?
It affects 19 products.
Linux distribution packages (40)
oci-systemd-hook AlmaLinux:8 | All versions | 1:0.1.15-2.git2d0b8a3.module_el8.3.0+2044+12421f43 |
oci-systemd-hook AlmaLinux:8 | All versions | 1:0.1.15-2.git2d0b8a3.module_el8.4.0+2496+12421f43 |
oci-systemd-hook AlmaLinux:8 | All versions | 1:0.1.15-2.git2d0b8a3.module_el8.5.0+119+9a9ec082 |
oci-umount AlmaLinux:8 | All versions | 2:2.3.4-2.git87f9237.module_el8.3.0+2044+12421f43 |
oci-umount AlmaLinux:8 | All versions | 2:2.3.4-2.git87f9237.module_el8.4.0+2496+12421f43 |
oci-umount AlmaLinux:8 | All versions | 2:2.3.4-2.git87f9237.module_el8.5.0+119+9a9ec082 |
buildah Red Hat:enterprise_linux:8::appstream | All versions | 0:1.5-3.gite94b4f9.module+el8.0.0+2958+4e823551 |
buildah-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:1.5-3.gite94b4f9.module+el8.0.0+2958+4e823551 |
buildah-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:1.5-3.gite94b4f9.module+el8.0.0+2958+4e823551 |
container-selinux Red Hat:enterprise_linux:8::appstream | All versions | 2:2.94-1.git1e99f1d.module+el8.0.0+2958+4e823551 |
containernetworking-plugins Red Hat:enterprise_linux:8::appstream | All versions | 0:0.7.4-3.git9ebe139.module+el8.0.0+2958+4e823551 |
containernetworking-plugins-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:0.7.4-3.git9ebe139.module+el8.0.0+2958+4e823551 |
containernetworking-plugins-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:0.7.4-3.git9ebe139.module+el8.0.0+2958+4e823551 |
containers-common Red Hat:enterprise_linux:8::appstream | All versions | 1:0.1.32-3.git1715c90.module+el8.0.0+2958+4e823551 |
fuse-overlayfs Red Hat:enterprise_linux:8::appstream | All versions | 0:0.3-2.module+el8.0.0+2958+4e823551 |
fuse-overlayfs-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:0.3-2.module+el8.0.0+2958+4e823551 |
fuse-overlayfs-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:0.3-2.module+el8.0.0+2958+4e823551 |
oci-systemd-hook Red Hat:enterprise_linux:8::appstream | All versions | 1:0.1.15-2.git2d0b8a3.module+el8.0.0+2958+4e823551 |
oci-systemd-hook-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 1:0.1.15-2.git2d0b8a3.module+el8.0.0+2958+4e823551 |
oci-systemd-hook-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 1:0.1.15-2.git2d0b8a3.module+el8.0.0+2958+4e823551 |
oci-umount Red Hat:enterprise_linux:8::appstream | All versions | 2:2.3.4-2.git87f9237.module+el8.0.0+2958+4e823551 |
oci-umount-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 2:2.3.4-2.git87f9237.module+el8.0.0+2958+4e823551 |
oci-umount-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 2:2.3.4-2.git87f9237.module+el8.0.0+2958+4e823551 |
podman Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.0-2.git921f98f.module+el8.0.0+2958+4e823551 |
podman-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.0-2.git921f98f.module+el8.0.0+2958+4e823551 |
podman-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.0-2.git921f98f.module+el8.0.0+2958+4e823551 |
podman-docker Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.0-2.git921f98f.module+el8.0.0+2958+4e823551 |
runc Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.0-55.rc5.dev.git2abd837.module+el8.0.0+3049+59fd2bba |
runc-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.0-55.rc5.dev.git2abd837.module+el8.0.0+3049+59fd2bba |
runc-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.0-55.rc5.dev.git2abd837.module+el8.0.0+3049+59fd2bba |
skopeo Red Hat:enterprise_linux:8::appstream | All versions | 1:0.1.32-3.git1715c90.module+el8.0.0+2958+4e823551 |
skopeo-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 1:0.1.32-3.git1715c90.module+el8.0.0+2958+4e823551 |
skopeo-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 1:0.1.32-3.git1715c90.module+el8.0.0+2958+4e823551 |
slirp4netns Red Hat:enterprise_linux:8::appstream | All versions | 0:0.1-2.dev.gitc4e1bc5.module+el8.0.0+2958+4e823551 |
slirp4netns-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:0.1-2.dev.gitc4e1bc5.module+el8.0.0+2958+4e823551 |
slirp4netns-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:0.1-2.dev.gitc4e1bc5.module+el8.0.0+2958+4e823551 |
docker Red Hat:openshift:3.4::el7 | All versions | 2:1.12.6-79.git5680db5.el7 |
docker-client Red Hat:openshift:3.4::el7 | All versions | 2:1.12.6-79.git5680db5.el7 |
docker-common Red Hat:openshift:3.4::el7 | All versions | 2:1.12.6-79.git5680db5.el7 |
docker-debuginfo Red Hat:openshift:3.4::el7 | All versions | 2:1.12.6-79.git5680db5.el7 |
Products include Apache Mesos, Canonical Ubuntu Linux, D2iq Dc\/Os, D2iq Kubernetes Engine, Docker Docker, Fedoraproject Fedora and 13 more.
How do I fix CVE-2019-5736?
Upgrade to a fixed version.
Is CVE-2019-5736 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-5736 exists.
Public exploit code: 1 Metasploit module, 2 Exploit-DB entries and 28 proofs of concept on GitHub.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as ALPINE-CVE-2019-5736, ALSA-2019:0975, CLEANSTART-2026-BP85403, DEBIAN-CVE-2019-5736, GHSA-gxmr-w5mj-v8hh, MGASA-2019-0068 and 12 more.