CVE-2019-18660 Information disclosure in n/a
Medium 4.7
Published
Updated
Check this codebase for CVE-2019-18660 and fix it if it is affected.
What it is: CVE-2019-18660 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 27 Nov 2019. 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-2019-18660 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-2019-18660/ (Markdown: https://insights.sbomify.com/CVE-2019-18660/index.md)
Attackers can exploit missing Spectre-RSB mitigations on PowerPC Linux kernels to leak sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-18660?
CVE-2019-18660 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 27 Nov 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The Linux kernel before 5.4.1 on powerpc allows Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs, aka CID-39e72bf96f58. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c.
Weakness: CWE-200
Which versions are affected by CVE-2019-18660?
It affects 5 products.
Linux distribution packages (40)
kernel Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
kernel-abi-whitelists Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debug Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debug-debuginfo Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debug-devel Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debuginfo Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debuginfo-common-i686 Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debuginfo-common-x86_64 Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
kernel-devel Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
kernel-doc Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
kernel-firmware Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
kernel-headers Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
perf Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
perf-debuginfo Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
python-perf Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
python-perf-debuginfo Red Hat:enterprise_linux:6::client | All versions | 0:2.6.32-754.31.1.el6 |
kernel Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
kernel-abi-whitelists Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debug Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debug-debuginfo Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debug-devel Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debuginfo Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debuginfo-common-i686 Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debuginfo-common-x86_64 Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
kernel-devel Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
kernel-doc Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
kernel-firmware Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
kernel-headers Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
perf Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
perf-debuginfo Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
python-perf Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
python-perf-debuginfo Red Hat:enterprise_linux:6::computenode | All versions | 0:2.6.32-754.31.1.el6 |
kernel Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-754.31.1.el6 |
kernel-abi-whitelists Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-754.31.1.el6 |
kernel-bootwrapper Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debug Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debug-debuginfo Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debug-devel Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debuginfo Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-754.31.1.el6 |
kernel-debuginfo-common-i686 Red Hat:enterprise_linux:6::server | All versions | 0:2.6.32-754.31.1.el6 |
Products include Canonical Ubuntu Linux, Fedoraproject Fedora, Linux kernel, Opensuse Leap, Redhat Enterprise Linux.
How do I fix CVE-2019-18660?
Apply the vendor's patch.
Is CVE-2019-18660 being exploited?
There is no known exploitation of CVE-2019-18660 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2019-18660, GHSA-vrqr-mqc4-gmrf, RHSA-2020:1984, RHSA-2020:2933, UBUNTU-CVE-2019-18660.