CVE-2021-3246 Memory corruption in n/a
High 8.8
Published
Updated
Check this codebase for CVE-2021-3246 and fix it if it is affected.
What it is: CVE-2021-3246 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 20 Jul 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-3246 in the wild and no public exploit code.
Affected product: Debian Debian 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-2021-3246/ (Markdown: https://insights.sbomify.com/CVE-2021-3246/index.md)
Attackers can execute arbitrary code by tricking users into opening a crafted WAV file processed by the libsndfile library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-3246?
CVE-2021-3246 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 20 Jul 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A heap buffer overflow vulnerability in msadpcm_decode_block of libsndfile 1.0.30 allows attackers to execute arbitrary code via a crafted WAV file.
Weakness: CWE-787
Which versions are affected by CVE-2021-3246?
It affects 3 products.
Linux distribution packages (40)
libsndfile AlmaLinux:8 | All versions | 1.0.28-10.el8_4.1 |
libsndfile-devel AlmaLinux:8 | All versions | 1.0.28-10.el8_4.1 |
libsndfile Red Hat:enterprise_linux:7::client | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile-debuginfo Red Hat:enterprise_linux:7::client | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile-devel Red Hat:enterprise_linux:7::client | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile-utils Red Hat:enterprise_linux:7::client | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile-devel Red Hat:enterprise_linux:7::computenode | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile-utils Red Hat:enterprise_linux:7::computenode | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile Red Hat:enterprise_linux:7::server | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile-devel Red Hat:enterprise_linux:7::server | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile-utils Red Hat:enterprise_linux:7::server | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile Red Hat:enterprise_linux:7::workstation | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile-devel Red Hat:enterprise_linux:7::workstation | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile-utils Red Hat:enterprise_linux:7::workstation | All versions | 0:1.0.25-12.el7_9.1 |
libsndfile Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.28-10.el8_4.1 |
libsndfile-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.28-10.el8_4.1 |
libsndfile-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.28-10.el8_4.1 |
libsndfile-utils-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:1.0.28-10.el8_4.1 |
libsndfile-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:1.0.28-10.el8_4.1 |
libsndfile-debugsource Red Hat:enterprise_linux:8::crb | All versions | 0:1.0.28-10.el8_4.1 |
libsndfile-devel Red Hat:enterprise_linux:8::crb | All versions | 0:1.0.28-10.el8_4.1 |
libsndfile-utils-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:1.0.28-10.el8_4.1 |
libsndfile Red Hat:rhel_eus:8.1::appstream | All versions | 0:1.0.28-8.el8_1.1 |
libsndfile-debuginfo Red Hat:rhel_eus:8.1::appstream | All versions | 0:1.0.28-8.el8_1.1 |
libsndfile-debugsource Red Hat:rhel_eus:8.1::appstream | All versions | 0:1.0.28-8.el8_1.1 |
libsndfile-utils-debuginfo Red Hat:rhel_eus:8.1::appstream | All versions | 0:1.0.28-8.el8_1.1 |
libsndfile-debuginfo Red Hat:rhel_eus:8.1::crb | All versions | 0:1.0.28-8.el8_1.1 |
libsndfile-debugsource Red Hat:rhel_eus:8.1::crb | All versions | 0:1.0.28-8.el8_1.1 |
libsndfile-devel Red Hat:rhel_eus:8.1::crb | All versions | 0:1.0.28-8.el8_1.1 |
libsndfile-utils-debuginfo Red Hat:rhel_eus:8.1::crb | All versions | 0:1.0.28-8.el8_1.1 |
libsndfile Red Hat:rhel_eus:8.2::appstream | All versions | 0:1.0.28-10.el8_2.1 |
libsndfile-debuginfo Red Hat:rhel_eus:8.2::appstream | All versions | 0:1.0.28-10.el8_2.1 |
libsndfile-debugsource Red Hat:rhel_eus:8.2::appstream | All versions | 0:1.0.28-10.el8_2.1 |
libsndfile-utils-debuginfo Red Hat:rhel_eus:8.2::appstream | All versions | 0:1.0.28-10.el8_2.1 |
libsndfile-debuginfo Red Hat:rhel_eus:8.2::crb | All versions | 0:1.0.28-10.el8_2.1 |
libsndfile-debugsource Red Hat:rhel_eus:8.2::crb | All versions | 0:1.0.28-10.el8_2.1 |
libsndfile-devel Red Hat:rhel_eus:8.2::crb | All versions | 0:1.0.28-10.el8_2.1 |
Products include Debian Debian Linux, Fedoraproject Fedora, Libsndfile Project Libsndfile.
How do I fix CVE-2021-3246?
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-2021-3246 being exploited?
There is no known exploitation of CVE-2021-3246 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALSA-2021:3253, DEBIAN-CVE-2021-3246, DLA-2722-1, DSA-4947-1, GHSA-p3g4-4phf-g392, MGASA-2021-0392 and 10 more.