CVE catalog
CVE-2024-12133
Libtasn1 vulnerability
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.11% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libtasn1-6 | sid | 4.21.0-2 | fixed |
| Debian | libtasn1-6 | forky | 4.21.0-2 | fixed |
| Debian | libtasn1-6 | trixie | 4.20.0-2+deb13u1 | fixed |
| Debian | libtasn1-6 | bookworm | 4.19.0-2+deb12u1 | fixed |
| Debian | libtasn1-6 | bookworm-security | 4.19.0-2+deb12u1 | fixed |
| Ubuntu | libtasn1-6 | noble | 4.19.0-2+deb12u1 | fixed |
| Ubuntu | libtasn1-6 | noble | 4.19.0-3ubuntu0.24.04.1 | fixed |
| Ubuntu | libtasn1-6-dev | noble | 4.19.0-3ubuntu0.24.04.1 | fixed |
| Ubuntu | libtasn1-bin | noble | 4.19.0-3ubuntu0.24.04.1 | fixed |
| Ubuntu | libtasn1-doc | noble | 4.19.0-3ubuntu0.24.04.1 | fixed |
| Alpine | libtasn1 | 3.18 | 4.20.0-r0 | fixed |
| Alpine | libtasn1 | 3.19 | 4.20.0-r0 | fixed |
| Alpine | libtasn1 | 3.20 | 4.20.0-r0 | fixed |
| Alpine | libtasn1 | 3.21 | 4.20.0-r0 | fixed |
| Alpine | libtasn1 | 3.22 | 4.20.0-r0 | fixed |
| Alpine | libtasn1 | 3.23 | 4.20.0-r0 | fixed |
| Alpine | libtasn1 | 3.24 | 4.20.0-r0 | fixed |
| Ubuntu | libtasn1-6 | 20.04 | 4.14-3 | vulnerable |
| Ubuntu | libtasn1-6 | 20.04 | 4.15.0-2 | vulnerable |
| Ubuntu | libtasn1-6 | 20.04 | 4.16.0-2 | vulnerable |
| Ubuntu | libtasn1-6 | 20.04 | 4.16.0-2ubuntu0.1 | fixed |
| Ubuntu | libtasn1-6 | 22.04 | 4.16.0-2 | vulnerable |
| Ubuntu | libtasn1-6 | 22.04 | 4.16.0-2build1 | vulnerable |
| Ubuntu | libtasn1-6 | 22.04 | 4.17.0-2 | vulnerable |
| Ubuntu | libtasn1-6 | 22.04 | 4.18.0-3 | vulnerable |
| Ubuntu | libtasn1-6 | 22.04 | 4.18.0-4 | vulnerable |
| Ubuntu | libtasn1-6 | 22.04 | 4.18.0-4build1 | vulnerable |
| Ubuntu | libtasn1-6 | 22.04 | 4.18.0-4ubuntu0.1 | fixed |
| Ubuntu | libtasn1-6 | 24.04 | 4.19.0-3 | vulnerable |
| Ubuntu | libtasn1-6 | 24.04 | 4.19.0-3build1 | vulnerable |
| Ubuntu | libtasn1-6 | 24.04 | 4.19.0-3ubuntu0.24.04.1 | fixed |
| Ubuntu | libtasn1-6 | pro | 4.12-2.1 | vulnerable |
| Ubuntu | libtasn1-6 | pro | 4.12-3 | vulnerable |
| Ubuntu | libtasn1-6 | pro | 4.13-2 | vulnerable |
| Ubuntu | libtasn1-6 | pro | 4.13-2ubuntu0.1~esm1 | vulnerable |
| Ubuntu | libtasn1-6 | 20.04 | 4.14-3 | vulnerable |
| Ubuntu | libtasn1-6 | 20.04 | 4.15.0-2 | vulnerable |
| Ubuntu | libtasn1-6 | 20.04 | 4.16.0-2 | vulnerable |
| Ubuntu | libtasn1-6 | 20.04 | 4.16.0-2ubuntu0.1 | fixed |
| Ubuntu | libtasn1-6 | 22.04 | 4.16.0-2 | vulnerable |
| Ubuntu | libtasn1-6 | 22.04 | 4.16.0-2build1 | vulnerable |
| Ubuntu | libtasn1-6 | 22.04 | 4.17.0-2 | vulnerable |
| Ubuntu | libtasn1-6 | 22.04 | 4.18.0-3 | vulnerable |
| Ubuntu | libtasn1-6 | 22.04 | 4.18.0-4 | vulnerable |
| Ubuntu | libtasn1-6 | 22.04 | 4.18.0-4build1 | vulnerable |
| Ubuntu | libtasn1-6 | 22.04 | 4.18.0-4ubuntu0.1 | fixed |
| Ubuntu | libtasn1-6 | 24.04 | 4.19.0-3 | vulnerable |
| Ubuntu | libtasn1-6 | 24.04 | 4.19.0-3build1 | vulnerable |
| Ubuntu | libtasn1-6 | 24.04 | 4.19.0-3ubuntu0.24.04.1 | fixed |
| Suse | libtasn1 | linux micro 6.1 | 4.19.0-slfo.1.1_2.1 | fixed |
| Suse | libtasn1 | linux micro 6.0 | 4.19.0-4.1 | fixed |
| Opensuse | gnutls | tumbleweed | 3.8.9-1.1 | fixed |
| Suse | libtasn1 | linux enterprise server 12 sp5-ltss | 4.9-3.16.1 | fixed |
| Suse | libtasn1 | linux enterprise server ltss extended security 12 sp5 | 4.9-3.16.1 | fixed |
| Opensuse | libtasn1 | tumbleweed | 4.20.0-1.1 | fixed |
| Suse | libtasn1 | linux enterprise micro 5.3 | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise micro 5.4 | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise micro 5.5 | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise module for basesystem 15 sp6 | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise high performance computing 15 sp3-ltss | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise high performance computing 15 sp4-espos | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise high performance computing 15 sp4-ltss | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise high performance computing 15 sp5-espos | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise high performance computing 15 sp5-ltss | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise server 15 sp3-ltss | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise server 15 sp4-ltss | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise server 15 sp5-ltss | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise server for sap applications 15 sp3 | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise server for sap applications 15 sp4 | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise server for sap applications 15 sp5 | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | manager proxy 4.3 | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | manager server 4.3 | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise micro 5.1 | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | linux enterprise micro 5.2 | 4.13-150000.4.11.1 | fixed |
| Suse | libtasn1 | enterprise storage 7.1 | 4.13-150000.4.11.1 | fixed |
| Opensuse | libtasn1 | leap 15.6 | 4.13-150000.4.11.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libtasn1-6 | source | sid | 4.20.0-1 | not yet assigned | Not reported | [1095406] |
| Debian | libtasn1-6 | source | forky | 4.20.0-1 | not yet assigned | Not reported | [1095406] |
| Debian | libtasn1-6 | source | trixie | 4.20.0-1 | not yet assigned | Not reported | [1095406] |
| Debian | libtasn1-6 | source | bookworm | 4.19.0-2+deb12u1 | not yet assigned | Not reported | [1095406] |
| Ubuntu | libtasn1-6 | deb | noble | 4.19.0-2+deb12u1 | Not reported | Not reported | Not reported |
| Ubuntu | libtasn1-6 | deb | noble | 4.19.0-3ubuntu0.24.04.1 | Not reported | Not reported | Not reported |
| Ubuntu | libtasn1-6-dev | deb | noble | 4.19.0-3ubuntu0.24.04.1 | Not reported | Not reported | Not reported |
| Ubuntu | libtasn1-bin | deb | noble | 4.19.0-3ubuntu0.24.04.1 | Not reported | Not reported | Not reported |
| Ubuntu | libtasn1-doc | deb | noble | 4.19.0-3ubuntu0.24.04.1 | Not reported | Not reported | Not reported |
| Alpine | libtasn1 | apk | 3.18 | 4.20.0-r0 | Not reported | ALPINE-CVE-2024-12133 | Not reported |
| Alpine | libtasn1 | apk | 3.19 | 4.20.0-r0 | Not reported | ALPINE-CVE-2024-12133 | Not reported |
| Alpine | libtasn1 | apk | 3.20 | 4.20.0-r0 | Not reported | ALPINE-CVE-2024-12133 | Not reported |
| Alpine | libtasn1 | apk | 3.21 | 4.20.0-r0 | Not reported | ALPINE-CVE-2024-12133 | Not reported |
| Alpine | libtasn1 | apk | 3.22 | 4.20.0-r0 | Not reported | ALPINE-CVE-2024-12133 | Not reported |
| Alpine | libtasn1 | apk | 3.23 | 4.20.0-r0 | Not reported | ALPINE-CVE-2024-12133 | Not reported |
| Alpine | libtasn1 | apk | 3.24 | 4.20.0-r0 | Not reported | ALPINE-CVE-2024-12133 | Not reported |
| Ubuntu | libtasn1-6 | deb | 20.04 | 4.16.0-2ubuntu0.1 | Not reported | USN-7275-1 | Not reported |
| Ubuntu | libtasn1-6 | deb | 22.04 | 4.18.0-4ubuntu0.1 | Not reported | USN-7275-1 | Not reported |
| Ubuntu | libtasn1-6 | deb | 24.04 | 4.19.0-3ubuntu0.24.04.1 | Not reported | USN-7275-2 | Not reported |
| Ubuntu | libtasn1-6 | deb | 20.04 | 4.16.0-2ubuntu0.1 | Not reported | UBUNTU-CVE-2024-12133 | Not reported |
| Ubuntu | libtasn1-6 | deb | 22.04 | 4.18.0-4ubuntu0.1 | Not reported | UBUNTU-CVE-2024-12133 | Not reported |
| Ubuntu | libtasn1-6 | deb | 24.04 | 4.19.0-3ubuntu0.24.04.1 | Not reported | UBUNTU-CVE-2024-12133 | Not reported |
| Suse | libtasn1 | rpm | linux micro 6.1 | 4.19.0-slfo.1.1_2.1 | Not reported | SUSE-SU-2025:20275-1 | Not reported |
| Suse | libtasn1 | rpm | linux micro 6.0 | 4.19.0-4.1 | Not reported | SUSE-SU-2025:20171-1 | Not reported |
| Opensuse | gnutls | rpm | tumbleweed | 3.8.9-1.1 | Not reported | OPENSUSE-SU-2025:14835-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise server 12 sp5-ltss | 4.9-3.16.1 | Not reported | SUSE-SU-2025:0512-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise server ltss extended security 12 sp5 | 4.9-3.16.1 | Not reported | SUSE-SU-2025:0512-1 | Not reported |
| Opensuse | libtasn1 | rpm | tumbleweed | 4.20.0-1.1 | Not reported | OPENSUSE-SU-2025:14756-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise micro 5.3 | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise micro 5.4 | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise micro 5.5 | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise module for basesystem 15 sp6 | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise high performance computing 15 sp3-ltss | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise high performance computing 15 sp4-espos | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise high performance computing 15 sp4-ltss | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise high performance computing 15 sp5-espos | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise high performance computing 15 sp5-ltss | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise server 15 sp3-ltss | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise server 15 sp4-ltss | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise server 15 sp5-ltss | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise server for sap applications 15 sp3 | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise server for sap applications 15 sp4 | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise server for sap applications 15 sp5 | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | manager proxy 4.3 | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | manager server 4.3 | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise micro 5.1 | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | linux enterprise micro 5.2 | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Suse | libtasn1 | rpm | enterprise storage 7.1 | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
| Opensuse | libtasn1 | rpm | leap 15.6 | 4.13-150000.4.11.1 | Not reported | SUSE-SU-2025:0548-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://cert-portal.siemens.com/productcert/csaf/ssa-082556.json]
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2025_4049.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2024-12133]
- [https://osv.dev/vulnerability/ALPINE-CVE-2024-12133]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2024-12133]
- [https://osv.dev/vulnerability/DLA-4061-1]
- [https://osv.dev/vulnerability/DSA-5863-1]
- [https://osv.dev/vulnerability/SUSE-SU-2025:0512-1]
- [https://osv.dev/vulnerability/SUSE-SU-2025:0548-1]
- [https://osv.dev/vulnerability/SUSE-SU-2025:20171-1]
- [https://osv.dev/vulnerability/SUSE-SU-2025:20275-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2024-12133]
- [https://osv.dev/vulnerability/USN-7275-1]
- [https://osv.dev/vulnerability/USN-7275-2]
- [https://osv.dev/vulnerability/openSUSE-SU-2025:14756-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2025:14835-1]
- [https://security-tracker.debian.org/tracker/CVE-2024-12133]
- [https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-12133.json]
- [https://ubuntu.com/security/notices/USN-7275-2]
- [https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-0294.json]
[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]