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TI-2024-11254 Aliases CVE-2024-12133GHSA-j3qr-8f3v-fgjj

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

Priority LOW 32CWE-407Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Partial Red Hat: 21 fixed, 3 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-407.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0111 66th percentileScored 2026-11-07
Fix Partial libtasn1: 4.20.0Red Hat: 8 advisoriesRed Hat: 21 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—libtasn1before 4.20.04.20.0Patch availableCNA
Red HatRed Hat Enterprise Linux 8—4.13-5.el8_10Patch availableCNA
Red HatRed Hat Enterprise Linux 8—4.13-5.el8_10Patch availableCNA
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support—3.6.14-10.el8_4.1Patch availableCNA
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support—4.13-3.el8_4.1Patch availableCNA
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On—3.6.14-10.el8_4.1Patch availableCNA
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On—4.13-3.el8_4.1Patch availableCNA
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support—3.6.16-5.el8_6.5Patch availableCNA
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support—4.13-3.el8_6.2Patch availableCNA
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On—3.6.16-5.el8_6.5Patch availableCNA
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On—4.13-3.el8_6.2Patch availableCNA
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service—3.6.16-7.el8_8.4Patch availableCNA
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service—4.13-4.el8_8.1Patch availableCNA
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions—3.6.16-7.el8_8.4Patch availableCNA
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions—4.13-4.el8_8.1Patch availableCNA
Red HatRed Hat Enterprise Linux 9—4.16.0-9.el9Patch availableCNA
Red HatRed Hat Enterprise Linux 9—4.16.0-9.el9Patch availableCNA
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions—4.16.0-8.el9_2.1Patch availableCNA
Red HatRed Hat Enterprise Linux 9.4 Extended Update Support—4.16.0-8.el9_4.1Patch availableCNA
Red HatRed Hat Discovery 1.14—1.14.3-1748529279Patch availableCNA
Red HatRed Hat Discovery 1.14—1.14.2-1748467619Patch availableCNA
Red HatRed Hat Enterprise Linux 10——Not affectedCNA
Red HatRed Hat Enterprise Linux 6——No fix listedCNA
Red HatRed Hat Enterprise Linux 7——No fix listedCNA
Red HatRed Hat OpenShift Container Platform 4——No fix listedCNA
  • libtasn1 Vendor— Affected before 4.20.0 Fixed in 4.20.0 Patch available CNA
  • Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 4.13-5.el8_10 Patch available CNA
  • Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 4.13-5.el8_10 Patch available CNA
  • Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 3.6.14-10.el8_4.1 Patch available CNA
  • Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 4.13-3.el8_4.1 Patch available CNA
  • Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On VendorRed Hat Affected — Fixed in 3.6.14-10.el8_4.1 Patch available CNA
  • Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On VendorRed Hat Affected — Fixed in 4.13-3.el8_4.1 Patch available CNA
  • Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 3.6.16-5.el8_6.5 Patch available CNA
  • Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support VendorRed Hat Affected — Fixed in 4.13-3.el8_6.2 Patch available CNA
  • Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On VendorRed Hat Affected — Fixed in 3.6.16-5.el8_6.5 Patch available CNA
  • Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On VendorRed Hat Affected — Fixed in 4.13-3.el8_6.2 Patch available CNA
  • Red Hat Enterprise Linux 8.8 Telecommunications Update Service VendorRed Hat Affected — Fixed in 3.6.16-7.el8_8.4 Patch available CNA
  • Red Hat Enterprise Linux 8.8 Telecommunications Update Service VendorRed Hat Affected — Fixed in 4.13-4.el8_8.1 Patch available CNA
  • Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 3.6.16-7.el8_8.4 Patch available CNA
  • Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 4.13-4.el8_8.1 Patch available CNA
  • Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 4.16.0-9.el9 Patch available CNA
  • Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 4.16.0-9.el9 Patch available CNA
  • Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions VendorRed Hat Affected — Fixed in 4.16.0-8.el9_2.1 Patch available CNA
  • Red Hat Enterprise Linux 9.4 Extended Update Support VendorRed Hat Affected — Fixed in 4.16.0-8.el9_4.1 Patch available CNA
  • Red Hat Discovery 1.14 VendorRed Hat Affected — Fixed in 1.14.3-1748529279 Patch available CNA
  • Red Hat Discovery 1.14 VendorRed Hat Affected — Fixed in 1.14.2-1748467619 Patch available CNA
  • Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat OpenShift Container Platform 4 VendorRed Hat Affected — Fixed in — No fix listed CNA

CPE names CNA · 25

CPEVersionsRoleVendor
cpe:/a:redhat:enterprise_linux:8::appstream8—Red Hat
cpe:/o:redhat:enterprise_linux:8::baseos8—Red Hat
cpe:/a:redhat:rhel_aus:8.4::appstream8.4—Red Hat
cpe:/a:redhat:rhel_eus_long_life:8.4::appstream8.4—Red Hat
cpe:/o:redhat:rhel_aus:8.4::baseos8.4—Red Hat
cpe:/o:redhat:rhel_eus_long_life:8.4::baseos8.4—Red Hat
cpe:/a:redhat:rhel_aus:8.6::appstream8.6—Red Hat
cpe:/a:redhat:rhel_eus_long_life:8.6::appstream8.6—Red Hat
cpe:/o:redhat:rhel_aus:8.6::baseos8.6—Red Hat
cpe:/o:redhat:rhel_eus_long_life:8.6::baseos8.6—Red Hat
  • cpe:/a:redhat:enterprise_linux:8::appstream Versions 8 — ·Red Hat
  • cpe:/o:redhat:enterprise_linux:8::baseos Versions 8 — ·Red Hat
  • cpe:/a:redhat:rhel_aus:8.4::appstream Versions 8.4 — ·Red Hat
  • cpe:/a:redhat:rhel_eus_long_life:8.4::appstream Versions 8.4 — ·Red Hat
  • cpe:/o:redhat:rhel_aus:8.4::baseos Versions 8.4 — ·Red Hat
  • cpe:/o:redhat:rhel_eus_long_life:8.4::baseos Versions 8.4 — ·Red Hat
  • cpe:/a:redhat:rhel_aus:8.6::appstream Versions 8.6 — ·Red Hat
  • cpe:/a:redhat:rhel_eus_long_life:8.6::appstream Versions 8.6 — ·Red Hat
  • cpe:/o:redhat:rhel_aus:8.6::baseos Versions 8.6 — ·Red Hat
  • cpe:/o:redhat:rhel_eus_long_life:8.6::baseos Versions 8.6 — ·Red Hat
Show 15 more CPE
CPEVersionsRoleVendor
cpe:/a:redhat:rhel_e4s:8.8::appstream8.8—Red Hat
cpe:/a:redhat:rhel_tus:8.8::appstream8.8—Red Hat
cpe:/o:redhat:rhel_e4s:8.8::baseos8.8—Red Hat
cpe:/o:redhat:rhel_tus:8.8::baseos8.8—Red Hat
cpe:/a:redhat:enterprise_linux:9::appstream9—Red Hat
cpe:/o:redhat:enterprise_linux:9::baseos9—Red Hat
cpe:/a:redhat:rhel_e4s:9.2::appstream9.2—Red Hat
cpe:/o:redhat:rhel_e4s:9.2::baseos9.2—Red Hat
cpe:/a:redhat:rhel_eus:9.4::appstream9.4—Red Hat
cpe:/o:redhat:rhel_eus:9.4::baseos9.4—Red Hat
cpe:/a:redhat:discovery:1.14::el91.14—Red Hat
cpe:/a:redhat:enterprise_linux:1010—Red Hat
cpe:/o:redhat:rhel_els:66—Red Hat
cpe:/o:redhat:rhel_els:77—Red Hat
cpe:/a:redhat:openshift:44—Red Hat
  • cpe:/a:redhat:rhel_e4s:8.8::appstream Versions 8.8 — ·Red Hat
  • cpe:/a:redhat:rhel_tus:8.8::appstream Versions 8.8 — ·Red Hat
  • cpe:/o:redhat:rhel_e4s:8.8::baseos Versions 8.8 — ·Red Hat
  • cpe:/o:redhat:rhel_tus:8.8::baseos Versions 8.8 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:9::appstream Versions 9 — ·Red Hat
  • cpe:/o:redhat:enterprise_linux:9::baseos Versions 9 — ·Red Hat
  • cpe:/a:redhat:rhel_e4s:9.2::appstream Versions 9.2 — ·Red Hat
  • cpe:/o:redhat:rhel_e4s:9.2::baseos Versions 9.2 — ·Red Hat
  • cpe:/a:redhat:rhel_eus:9.4::appstream Versions 9.4 — ·Red Hat
  • cpe:/o:redhat:rhel_eus:9.4::baseos Versions 9.4 — ·Red Hat
  • cpe:/a:redhat:discovery:1.14::el9 Versions 1.14 — ·Red Hat
  • cpe:/a:redhat:enterprise_linux:10 Versions 10 — ·Red Hat
  • cpe:/o:redhat:rhel_els:6 Versions 6 — ·Red Hat
  • cpe:/o:redhat:rhel_els:7 Versions 7 — ·Red Hat
  • cpe:/a:redhat:openshift:4 Versions 4 — ·Red Hat

Remediation

  • Fix · CNA libtasn1 Fixed in 4.20.0

Red Hat 8 advisories

  • RHSA-2026:33125 Released 2026-06-29 · Red Hat rating Important
    gnutls and libtasn1 security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) gnutls-c++-3.6.14-10.el8_4.1, gnutls-dane-3.6.14-10.el8_4.1, gnutls-devel-3.6.14-10.el8_4.1 +3
    • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) gnutls-c++-3.6.14-10.el8_4.1, gnutls-dane-3.6.14-10.el8_4.1, gnutls-devel-3.6.14-10.el8_4.1 +3
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) gnutls-3.6.14-10.el8_4.1, libtasn1-4.13-3.el8_4.1
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) gnutls-3.6.14-10.el8_4.1, libtasn1-4.13-3.el8_4.1
  • RHSA-2026:30849 Released 2026-06-29 · Red Hat rating Important
    gnutls and libtasn1 security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) gnutls-c++-3.6.16-5.el8_6.5, gnutls-dane-3.6.16-5.el8_6.5, gnutls-devel-3.6.16-5.el8_6.5 +3
    • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) gnutls-c++-3.6.16-5.el8_6.5, gnutls-dane-3.6.16-5.el8_6.5, gnutls-devel-3.6.16-5.el8_6.5 +3
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) gnutls-3.6.16-5.el8_6.5, libtasn1-4.13-3.el8_6.2
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) gnutls-3.6.16-5.el8_6.5, libtasn1-4.13-3.el8_6.2
  • RHSA-2026:30850 Released 2026-06-29 · Red Hat rating Important
    gnutls and libtasn1 security update
    • Red Hat Enterprise Linux AppStream E4S (v.8.8) gnutls-c++-3.6.16-7.el8_8.4, gnutls-dane-3.6.16-7.el8_8.4, gnutls-devel-3.6.16-7.el8_8.4 +3
    • Red Hat Enterprise Linux AppStream TUS (v.8.8) gnutls-c++-3.6.16-7.el8_8.4, gnutls-dane-3.6.16-7.el8_8.4, gnutls-devel-3.6.16-7.el8_8.4 +3
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) gnutls-3.6.16-7.el8_8.4, libtasn1-4.13-4.el8_8.1
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) gnutls-3.6.16-7.el8_8.4, libtasn1-4.13-4.el8_8.1
Show 5 more Red Hat advisories
  • RHSA-2025:17347 Released 2025-10-06 · Red Hat rating Moderate
    libtasn1 security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) libtasn1-devel-4.16.0-8.el9_2.1, libtasn1-tools-4.16.0-8.el9_2.1
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) libtasn1-4.16.0-8.el9_2.1
  • RHSA-2025:8385 Released 2025-06-02 · Red Hat rating Moderate
    A Subscription Management tool for finding and reporting Red Hat product usage
    • Red Hat Discovery 1.14 registry.redhat.io/discovery/discovery-server-rhel9, registry.redhat.io/discovery/discovery-ui-rhel9
  • RHSA-2025:8021 Released 2025-05-20 · Red Hat rating Moderate
    libtasn1 security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) libtasn1-devel-4.16.0-8.el9_4.1, libtasn1-tools-4.16.0-8.el9_4.1
    • Red Hat Enterprise Linux BaseOS EUS (v.9.4) libtasn1-4.16.0-8.el9_4.1
  • RHSA-2025:7077 Released 2025-05-13 · Red Hat rating Moderate
    libtasn1 security update
    • Red Hat Enterprise Linux AppStream (v. 9) libtasn1-devel-4.16.0-9.el9, libtasn1-tools-4.16.0-9.el9
    • Red Hat Enterprise Linux BaseOS (v. 9) libtasn1-4.16.0-9.el9
  • RHSA-2025:4049 Released 2025-04-23 · Red Hat rating Moderate
    libtasn1 security update
    • Red Hat Enterprise Linux AppStream (v. 8) libtasn1-devel-4.13-5.el8_10, libtasn1-tools-4.13-5.el8_10
    • Red Hat Enterprise Linux BaseOS (v. 8) libtasn1-4.13-5.el8_10

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat OpenShift Container Platform 4AffectedNo fix yet: Fix deferred
Red Hat Discovery 1.14Fixed RHSA-2025:8385
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2025:4049
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:7077
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2026:33125
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2026:30849
Red Hat Enterprise Linux AppStream E4S (v.8.8)Fixed RHSA-2026:30850
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2025:17347
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2025:8021
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)Fixed RHSA-2026:33125
Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)Fixed RHSA-2026:30849
Red Hat Enterprise Linux AppStream TUS (v.8.8)Fixed RHSA-2026:30850
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2025:4049
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2025:7077
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2026:33125
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2026:30849
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2026:30850
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2025:17347
Red Hat Enterprise Linux BaseOS EUS (v.9.4)Fixed RHSA-2025:8021
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2026:33125
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)Fixed RHSA-2026:30849
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2026:30850
Not affected: 13 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6)
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8)
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-12133
  2. 2026-10-03 Alias added: GHSA-j3qr-8f3v-fgjj
  3. 2026-10-21 Affected versions changed · CNA
  4. 2026-10-21 Affected versions changed · Red Hat
  5. 2026-10-21 Affected versions changed · CNA
  6. 2026-10-22 Affected versions changed · Red Hat
  7. 2026-10-23 Affected versions changed · CNA
  8. 2026-10-23 Affected versions changed · Red Hat

References

Advisory 8

Other 4

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7413 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences