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

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Summary

CVECVE-2024-12133
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-02-10 16:15:37 UTC
Updated2026-05-12 12:16:16 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS: 0.003430000 probability, percentile 0.569390000 (date 2026-05-12)

Problem Types: CWE-407 | CWE-407 Inefficient Algorithmic Complexity

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.1CNACVSS5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:4.13-5.el8_10 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:4.13-5.el8_10 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:4.16.0-9.el9 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:4.16.0-9.el9 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.2 Update Services For SAP Solutions unaffected 0:4.16.0-8.el9_2.1 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support unaffected 0:4.16.0-8.el9_4.1 * rpm Not specified
CNA Red Hat Red Hat Discovery 1.14 unaffected sha256:ad1045aa0de937c3a6969ec377f7bfeda9a44ee434a954e8245e9840316ffc1c * rpm Not specified
CNA Red Hat Red Hat Discovery 1.14 unaffected sha256:c960fa13577db72b52765d6941688f431f61fe38adb717b2d8bb6569e241bc5e * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 10 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 6 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat OpenShift Container Platform 4 Not specified Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens RUGGEDCOM ROX MX5000 affected V2.17.0 custom Not specified
ADP Siemens RUGGEDCOM ROX MX5000RE affected V2.17.0 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1400 affected V2.17.0 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1500 affected V2.17.0 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1501 affected V2.17.0 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1510 affected V2.17.0 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1511 affected V2.17.0 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1512 affected V2.17.0 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1524 affected V2.17.0 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1536 affected V2.17.0 custom Not specified
ADP Siemens RUGGEDCOM ROX RX5000 affected V2.17.0 custom Not specified

References

ReferenceSourceLinkTags
www.openwall.com/lists/oss-security/2025/02/06/6 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
cert-portal.siemens.com/productcert/html/ssa-082556.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
lists.debian.org/debian-lts-announce/2025/02/msg00025.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
bugzilla.redhat.com/show_bug.cgi [email protected] bugzilla.redhat.com
access.redhat.com/errata/RHSA-2025:7077 [email protected] access.redhat.com
gitlab.com/gnutls/libtasn1/-/blob/master/doc/security/CVE-2024-12133.md [email protected] gitlab.com
access.redhat.com/errata/RHSA-2025:8021 [email protected] access.redhat.com
security.netapp.com/advisory/ntap-20250523-0003 af854a3a-2127-422b-91ae-364da2661108 security.netapp.com
cert-portal.siemens.com/productcert/html/ssa-202008.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
gitlab.com/gnutls/libtasn1/-/issues/52 [email protected] gitlab.com
access.redhat.com/errata/RHSA-2025:8385 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2025:4049 [email protected] access.redhat.com
access.redhat.com/security/cve/CVE-2024-12133 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2025:17347 [email protected] access.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Red Hat would like to thank Bing Shi for reporting this issue. (en)

Additional Advisory Data

SourceTimeEvent
CNA2025-02-10T08:14:05.460ZReported to Red Hat.
CNA2025-02-10T00:00:00.000ZMade public.
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