Libtasn1: inefficient der decoding in libtasn1 leading to potential remote dos
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 1.1%
exploitation probability
1.1%top 38% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products
libtasn1Red Hat · Red Hat Discovery 1.14Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRed Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRed Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9.4 Extended Update SupportRed Hat · Red Hat OpenShift Container Platform 4References
https://access.redhat.com/errata/RHSA-2025:17347https://access.redhat.com/errata/RHSA-2025:4049https://access.redhat.com/errata/RHSA-2025:7077https://access.redhat.com/errata/RHSA-2025:8021https://access.redhat.com/errata/RHSA-2025:8385https://access.redhat.com/errata/RHSA-2026:30849https://access.redhat.com/errata/RHSA-2026:30850https://access.redhat.com/errata/RHSA-2026:33125https://access.redhat.com/security/cve/CVE-2024-12133https://bugzilla.redhat.com/show_bug.cgi?id=2344611https://cert-portal.siemens.com/productcert/html/ssa-082556.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-202008.html