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Vulnerability · Published Feb 10, 2025 · Assigned by redhat

CVE-2024-12133Libtasn1: inefficient der decoding in libtasn1 leading to potential remote dos

Medium 5.3

In plain English

A medium-severity security flaw in libtasn1. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)1.1%top 33.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8libtasn14.13-5.el8_10ALSA-2025:4049
AlmaLinux:9libtasn14.16.0-9.el9ALSA-2025:7077
AlmaLinux:8libtasn1-devel4.13-5.el8_10ALSA-2025:4049
AlmaLinux:9libtasn1-devel4.16.0-9.el9ALSA-2025:7077
AlmaLinux:8libtasn1-tools4.13-5.el8_10ALSA-2025:4049
AlmaLinux:9libtasn1-tools4.16.0-9.el9ALSA-2025:7077
Alpine:v3.20libtasn14.20.0-r0ALPINE-CVE-2024-12133
Alpine:v3.21libtasn14.20.0-r0ALPINE-CVE-2024-12133
Alpine:v3.22libtasn14.20.0-r0ALPINE-CVE-2024-12133
Alpine:v3.23libtasn14.20.0-r0ALPINE-CVE-2024-12133
Alpine:v3.24libtasn14.20.0-r0ALPINE-CVE-2024-12133
Debian:12libtasn1-64.19.0-2+deb12u1DEBIAN-CVE-2024-12133
Debian:12libtasn1-64.19.0-2+deb12u1DSA-5863-1
Debian:13libtasn1-64.20.0-1DEBIAN-CVE-2024-12133
Debian:14libtasn1-64.20.0-1DEBIAN-CVE-2024-12133
Rocky Linux:8libtasn10:4.13-5.el8_10RLSA-2025:4049
Rocky Linux:9libtasn10:4.16.0-9.el9RLSA-2025:7077
Ubuntu:22.04:LTSlibtasn1-64.18.0-4ubuntu0.1USN-7275-1
Ubuntu:22.04:LTSlibtasn1-64.18.0-4ubuntu0.1UBUNTU-CVE-2024-12133
Ubuntu:24.04:LTSlibtasn1-64.19.0-3ubuntu0.24.04.1USN-7275-2
Ubuntu:24.04:LTSlibtasn1-64.19.0-3ubuntu0.24.04.1UBUNTU-CVE-2024-12133

Affected products (as reported)

VendorProductVersions
libtasn1 0 – before 4.20.0
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On see references
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support see references
Red Hat Red Hat Discovery 1.14 see references
Red Hat Red Hat Discovery 1.14 see references
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat OpenShift Container Platform 4 see references

Weakness: CWE-407 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References