CVE-2024-12243
Gnutls: gnutls impacted by inefficient der decoding in libtasn1 leading to remote dos
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
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.
Timeline
ID reserved
By redhat
- 2 months later
· 2 months later
Published
- 21 months later
· 21 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVDNVD · Deferred | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
- EPSS (exploitation in 30 days)
- 1.3% · top 30% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
gnutls
- affected ≤ 3.6.16
- affected 3.7.0 – ≤ 3.7.11
- affected 3.8.0 – < 3.8.8
- unaffected 3.8.9 – < *
Red Hat · Red Hat Enterprise Linux 8
- unaffected 0:3.6.16-8.el8_10.3 – < *
Red Hat · Red Hat Enterprise Linux 8
- unaffected 0:3.6.16-8.el8_10.3 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:3.8.3-6.el9 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:3.8.3-6.el9 – < *
Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
- unaffected 0:3.7.6-21.el9_2.4 – < *
Red Hat · Red Hat Enterprise Linux 9.4 Extended Update Support
- unaffected 0:3.8.3-4.el9_4.2 – < *
Red Hat · Red Hat Discovery 1.14
- unaffected 1.14.3-1748529279 – < *
Red Hat · Red Hat Discovery 1.14
- unaffected 1.14.2-1748467619 – < *
Red Hat · Red Hat Enterprise Linux 10
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 6
All versions: unknown
Red Hat · Red Hat Enterprise Linux 7
All versions: unknown
Red Hat · Red Hat OpenShift Container Platform 4
All versions: affected
References (13)
- RHSA-2025:17361 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2025:4051 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2025:7076 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2025:8020 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2025:8385 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2024-12243 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2344615 (opens in a new tab)issue-trackingx_refsource_REDHAT
- https://gitlab.com/gnutls/gnutls/-/issues/1553 (opens in a new tab)
- https://gitlab.com/gnutls/libtasn1/-/issues/52 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/02/msg00027.html (opens in a new tab)
- https://security.netapp.com/advisory/ntap-20250523-0002/ (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-202008.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2024-12243)Record last updated .