Medium [CVE-2024-12243] gnutls impacted by inefficient der decoding in libtasn1 leading to remote dos
This medium-severity Red Hat Linux advisory covers CVE-2024-12243 affecting Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.4 Extended Update Support.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
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Summary
A flaw was found in GnuTLS, which relies on libtasn1 for ASN.1 data processing. Due to an inefficient algorithm in libtasn1, decoding certain DER-encoded certificate data can take excessive time, leading to increased resource consumption.
This flaw allows a remote attacker to send a specially crafted certificate, causing GnuTLS to become unresponsive or slow, resulting in a denial-of-service condition. Red Hat severity: Moderate — CVSS 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).
Weakness: CWE-407.
Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat Discovery 1.14; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat OpenShift Container Platform 4.
Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2025:4051, RHSA-2025:7076, RHSA-2025:17361, RHSA-2025:8020, RHSA-2025:8385.
Affected products named by the advisory: Red Hat package: gnutls.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 22 days ago·verify at source
- gnutls-0:3.6.16-8.el8_10.3
- gnutls-0:3.8.3-6.el9
- gnutls-0:3.7.6-21.el9_2.4
- gnutls-0:3.8.3-4.el9_4.2
- discovery/discovery-server-rhel9:1.14.3-1748529279
- discovery/discovery-ui-rhel9:1.14.2-1748467619
- RHSA-2025:4051
- RHSA-2025:7076
- RHSA-2025:17361
- RHSA-2025:8020
- RHSA-2025:8385
Official advisory · high-confidence parse· fetched 22 days ago·verify at source
Mitigation
Upgrade to a fixed release: gnutls-0:3.6.16-8.el8_10.3, gnutls-0:3.8.3-6.el9, gnutls-0:3.7.6-21.el9_2.4, gnutls-0:3.8.3-4.el9_4.2, discovery/discovery-server-rhel9:1.14.3-1748529279, discovery/discovery-ui-rhel9:1.14.2-1748467619. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 22 days ago·verify at source
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