CVE-2024-12133 Libtasn1: inefficient der decoding in libtasn1 leading to potential remote dos
Medium 5.3
Published
Updated
Check this codebase for CVE-2024-12133 and fix it if it is affected.
What it is: CVE-2024-12133 is a medium-severity denial of service vulnerability in Red Hat Discovery 1.14, published on 10 Feb 2025. 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-2024-12133 in the wild and no public exploit code.
Affected product: Red Hat Discovery 1.14. 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-2024-12133/ (Markdown: https://insights.sbomify.com/CVE-2024-12133/index.md)
An attacker can cause a denial of service by sending a specially crafted certificate that triggers inefficient DER decoding in libtasn1.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-12133?
CVE-2024-12133 is a medium-severity denial of service vulnerability in Red Hat Discovery 1.14, published on 10 Feb 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw in libtasn1 causes inefficient handling of specific certificate data. When processing a large number of elements in a certificate, libtasn1 takes much longer than expected, which can slow down or even crash the system. This flaw allows an attacker to send a specially crafted certificate, causing a denial of service attack.
Weakness: CWE-407
Which versions are affected by CVE-2024-12133?
Linux distribution packages (40)
libtasn1 AlmaLinux:8 | All versions | 4.13-5.el8_10 |
libtasn1-devel AlmaLinux:8 | All versions | 4.13-5.el8_10 |
libtasn1-tools AlmaLinux:8 | All versions | 4.13-5.el8_10 |
libtasn1 AlmaLinux:9 | All versions | 4.16.0-9.el9 |
libtasn1-devel AlmaLinux:9 | All versions | 4.16.0-9.el9 |
libtasn1-tools AlmaLinux:9 | All versions | 4.16.0-9.el9 |
libtasn1-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:4.13-5.el8_10 |
libtasn1-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:4.13-5.el8_10 |
libtasn1-devel Red Hat:enterprise_linux:8::appstream | All versions | 0:4.13-5.el8_10 |
libtasn1-tools Red Hat:enterprise_linux:8::appstream | All versions | 0:4.13-5.el8_10 |
libtasn1-tools-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:4.13-5.el8_10 |
libtasn1 Red Hat:enterprise_linux:8::baseos | All versions | 0:4.13-5.el8_10 |
libtasn1-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:4.13-5.el8_10 |
libtasn1-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:4.13-5.el8_10 |
libtasn1-tools-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:4.13-5.el8_10 |
libtasn1-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:4.16.0-9.el9 |
libtasn1-debugsource Red Hat:enterprise_linux:9::appstream | All versions | 0:4.16.0-9.el9 |
libtasn1-devel Red Hat:enterprise_linux:9::appstream | All versions | 0:4.16.0-9.el9 |
libtasn1-tools Red Hat:enterprise_linux:9::appstream | All versions | 0:4.16.0-9.el9 |
libtasn1-tools-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:4.16.0-9.el9 |
libtasn1 Red Hat:enterprise_linux:9::baseos | All versions | 0:4.16.0-9.el9 |
libtasn1-debuginfo Red Hat:enterprise_linux:9::baseos | All versions | 0:4.16.0-9.el9 |
libtasn1-debugsource Red Hat:enterprise_linux:9::baseos | All versions | 0:4.16.0-9.el9 |
libtasn1-tools-debuginfo Red Hat:enterprise_linux:9::baseos | All versions | 0:4.16.0-9.el9 |
libtasn1-debuginfo Red Hat:rhel_e4s:9.2::appstream | All versions | 0:4.16.0-8.el9_2.1 |
libtasn1-debugsource Red Hat:rhel_e4s:9.2::appstream | All versions | 0:4.16.0-8.el9_2.1 |
libtasn1-devel Red Hat:rhel_e4s:9.2::appstream | All versions | 0:4.16.0-8.el9_2.1 |
libtasn1-tools Red Hat:rhel_e4s:9.2::appstream | All versions | 0:4.16.0-8.el9_2.1 |
libtasn1-tools-debuginfo Red Hat:rhel_e4s:9.2::appstream | All versions | 0:4.16.0-8.el9_2.1 |
libtasn1 Red Hat:rhel_e4s:9.2::baseos | All versions | 0:4.16.0-8.el9_2.1 |
libtasn1-debuginfo Red Hat:rhel_e4s:9.2::baseos | All versions | 0:4.16.0-8.el9_2.1 |
libtasn1-debugsource Red Hat:rhel_e4s:9.2::baseos | All versions | 0:4.16.0-8.el9_2.1 |
libtasn1-tools-debuginfo Red Hat:rhel_e4s:9.2::baseos | All versions | 0:4.16.0-8.el9_2.1 |
libtasn1-debuginfo Red Hat:rhel_eus:9.4::appstream | All versions | 0:4.16.0-8.el9_4.1 |
libtasn1-debugsource Red Hat:rhel_eus:9.4::appstream | All versions | 0:4.16.0-8.el9_4.1 |
libtasn1-devel Red Hat:rhel_eus:9.4::appstream | All versions | 0:4.16.0-8.el9_4.1 |
libtasn1-tools Red Hat:rhel_eus:9.4::appstream | All versions | 0:4.16.0-8.el9_4.1 |
libtasn1-tools-debuginfo Red Hat:rhel_eus:9.4::appstream | All versions | 0:4.16.0-8.el9_4.1 |
libtasn1 Red Hat:rhel_eus:9.4::baseos | All versions | 0:4.16.0-8.el9_4.1 |
libtasn1-debuginfo Red Hat:rhel_eus:9.4::baseos | All versions | 0:4.16.0-8.el9_4.1 |
How do I fix CVE-2024-12133?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-12133 being exploited?
There is no known exploitation of CVE-2024-12133 in the wild and no public exploit code.
Sources
Also known as ALPINE-CVE-2024-12133, ALSA-2025:4049, ALSA-2025:7077, AZL-56705, AZL-56720, AZL-56758 and 24 more.