CVE-2024-12133

Libtasn1: inefficient der decoding in libtasn1 leading to potential remote dos

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.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.10%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support
Affected: Red Hat Red Hat Enterprise Linux 10
Affected: Red Hat Red Hat Enterprise Linux 6
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat OpenShift Container Platform 4
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2025:4049 vendor advisory
https://access.redhat.com/errata/RHSA-2025:7077 vendor advisory
https://access.redhat.com/errata/RHSA-2025:8021 vendor advisory
https://access.redhat.com/security/cve/CVE-2024-12133 vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2344611 issue tracking
https://gitlab.com/gnutls/libtasn1/-/issues/52
http://www.openwall.com/lists/oss-security/2025/02/06/6
https://lists.debian.org/debian-lts-announce/2025/02/msg00025.html
https://security.netapp.com/advisory/ntap-20250523-0003/

Frequently Asked Questions

What is the severity of CVE-2024-12133?
CVE-2024-12133 has been scored as a medium severity vulnerability.
How to fix CVE-2024-12133?
To fix CVE-2024-12133, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-12133 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-12133 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-12133?
CVE-2024-12133 affects Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support, Red Hat Red Hat Enterprise Linux 10, Red Hat Red Hat Enterprise Linux 6, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat OpenShift Container Platform 4.
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