CVE-2020-12352 Information disclosure in BlueZ
Medium 6.5
Published
Updated
Check this codebase for CVE-2020-12352 and fix it if it is affected.
What it is: CVE-2020-12352 is a medium-severity vulnerability in Linux kernel, published on 23 Nov 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-2020-12352 in the wild and no public exploit code.
Affected product: Linux kernel. 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-2020-12352/ (Markdown: https://insights.sbomify.com/CVE-2020-12352/index.md)
An unauthenticated attacker with adjacent access can exploit improper access control in BlueZ to disclose sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-12352?
CVE-2020-12352 is a medium-severity vulnerability in Linux kernel, published on 23 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper access control in BlueZ may allow an unauthenticated user to potentially enable information disclosure via adjacent access.
Weakness: CWE-909
Which versions are affected by CVE-2020-12352?
It affects 1 product.
Linux distribution packages (40)
kernel Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
kernel-abi-whitelists Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
kernel-debug Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
kernel-debug-debuginfo Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
kernel-debug-devel Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
kernel-debuginfo Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
kernel-devel Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
kernel-doc Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
kernel-tools Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
kernel-tools-debuginfo Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
kernel-tools-libs Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
kernel-tools-libs-devel Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
perf Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
perf-debuginfo Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
python-perf Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
python-perf-debuginfo Red Hat:rhel_aus:7.2::server | All versions | 0:3.10.0-327.93.1.el7 |
kernel Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-abi-whitelists Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-debug Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-debug-debuginfo Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-debug-devel Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-debuginfo Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-debuginfo-common-x86_64 Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-devel Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-doc Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-tools Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-tools-debuginfo Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-tools-libs Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-tools-libs-devel Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
perf Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
perf-debuginfo Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
python-perf Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
python-perf-debuginfo Red Hat:rhel_aus:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel Red Hat:rhel_e4s:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-abi-whitelists Red Hat:rhel_e4s:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-bootwrapper Red Hat:rhel_e4s:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-debug Red Hat:rhel_e4s:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-debug-debuginfo Red Hat:rhel_e4s:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
kernel-debug-devel Red Hat:rhel_e4s:7.3::server | All versions | 0:3.10.0-514.85.1.el7 |
Products include Linux kernel.
How do I fix CVE-2020-12352?
Apply the vendor's patch.
Is CVE-2020-12352 being exploited?
There is no known exploitation of CVE-2020-12352 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2020-12352, RHSA-2020:4990, RHSA-2020:4991, UBUNTU-CVE-2020-12352.