CVE-2021-46848 Integer overflow in n/a
Critical 9.1
Published
Updated
Check this codebase for CVE-2021-46848 and fix it if it is affected.
What it is: CVE-2021-46848 is a critical vulnerability in Debian Debian Linux, published on 24 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-46848 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-2021-46848/ (Markdown: https://insights.sbomify.com/CVE-2021-46848/index.md)
An off-by-one error in GNU Libtasn1 allows attackers to cause denial of service or potentially execute code via crafted ASN.1 data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-46848?
CVE-2021-46848 is a critical vulnerability in Debian Debian Linux, published on 24 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
GNU Libtasn1 before 4.19.0 has an ETYPE_OK off-by-one array size check that affects asn1_encode_simple_der.
Weakness: CWE-193
Which versions are affected by CVE-2021-46848?
It affects 3 products.
Linux distribution packages (40)
libtasn1 AlmaLinux:8 | All versions | 4.13-4.el8_7 |
libtasn1-devel AlmaLinux:8 | All versions | 4.13-4.el8_7 |
libtasn1-tools AlmaLinux:8 | All versions | 4.13-4.el8_7 |
libtasn1 AlmaLinux:9 | All versions | 4.16.0-8.el9_1 |
libtasn1-devel AlmaLinux:9 | All versions | 4.16.0-8.el9_1 |
libtasn1-tools AlmaLinux:9 | All versions | 4.16.0-8.el9_1 |
libtasn1-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:4.13-4.el8_7 |
libtasn1-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:4.13-4.el8_7 |
libtasn1-devel Red Hat:enterprise_linux:8::appstream | All versions | 0:4.13-4.el8_7 |
libtasn1-tools Red Hat:enterprise_linux:8::appstream | All versions | 0:4.13-4.el8_7 |
libtasn1-tools-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:4.13-4.el8_7 |
libtasn1 Red Hat:enterprise_linux:8::baseos | All versions | 0:4.13-4.el8_7 |
libtasn1-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:4.13-4.el8_7 |
libtasn1-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:4.13-4.el8_7 |
libtasn1-tools-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:4.13-4.el8_7 |
libtasn1-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:4.16.0-8.el9_1 |
libtasn1-debugsource Red Hat:enterprise_linux:9::appstream | All versions | 0:4.16.0-8.el9_1 |
libtasn1-devel Red Hat:enterprise_linux:9::appstream | All versions | 0:4.16.0-8.el9_1 |
libtasn1-tools Red Hat:enterprise_linux:9::appstream | All versions | 0:4.16.0-8.el9_1 |
libtasn1-tools-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:4.16.0-8.el9_1 |
libtasn1 Red Hat:enterprise_linux:9::baseos | All versions | 0:4.16.0-8.el9_1 |
libtasn1-debuginfo Red Hat:enterprise_linux:9::baseos | All versions | 0:4.16.0-8.el9_1 |
libtasn1-debugsource Red Hat:enterprise_linux:9::baseos | All versions | 0:4.16.0-8.el9_1 |
libtasn1-tools-debuginfo Red Hat:enterprise_linux:9::baseos | All versions | 0:4.16.0-8.el9_1 |
libtasn1-debuginfo Red Hat:rhel_eus:8.6::appstream | All versions | 0:4.13-3.el8_6.1 |
libtasn1-debugsource Red Hat:rhel_eus:8.6::appstream | All versions | 0:4.13-3.el8_6.1 |
libtasn1-devel Red Hat:rhel_eus:8.6::appstream | All versions | 0:4.13-3.el8_6.1 |
libtasn1-tools Red Hat:rhel_eus:8.6::appstream | All versions | 0:4.13-3.el8_6.1 |
libtasn1-tools-debuginfo Red Hat:rhel_eus:8.6::appstream | All versions | 0:4.13-3.el8_6.1 |
libtasn1 Red Hat:rhel_eus:8.6::baseos | All versions | 0:4.13-3.el8_6.1 |
libtasn1-debuginfo Red Hat:rhel_eus:8.6::baseos | All versions | 0:4.13-3.el8_6.1 |
libtasn1-debugsource Red Hat:rhel_eus:8.6::baseos | All versions | 0:4.13-3.el8_6.1 |
libtasn1-tools-debuginfo Red Hat:rhel_eus:8.6::baseos | All versions | 0:4.13-3.el8_6.1 |
libtasn1 Rocky Linux:8 | All versions | 0:4.13-4.el8_7 |
libtasn1 Rocky Linux:9 | All versions | 0:4.16.0-8.el9_1 |
libtasn1 SUSE:Enterprise Storage 6 | All versions | 4.13-150000.4.8.1 |
libtasn1 SUSE:Enterprise Storage 7 | All versions | 4.13-150000.4.8.1 |
libtasn1 SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS | All versions | 4.13-150000.4.8.1 |
libtasn1 SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | All versions | 4.13-150000.4.8.1 |
libtasn1 SUSE:Linux Enterprise High Performance Computing 15 SP2-ESPOS | All versions | 4.13-150000.4.8.1 |
Products include Debian Debian Linux, Fedoraproject Fedora, Gnu Libtasn1.
How do I fix CVE-2021-46848?
Upgrade to a fixed version.
Is CVE-2021-46848 being exploited?
There is no known exploitation of CVE-2021-46848 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2021-46848, ALSA-2023:0116, ALSA-2023:0343, AZL-11318, CLSA-2023-1695406987, CLSA-2025-1746653404 and 20 more.