CVE-2024-12243
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.
Does this matter?
Lower severity and a low EPSS score (1.29%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- EPSS
- 1.29% probability · 69th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-407
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2025:17361
- https://access.redhat.com/errata/RHSA-2025:4051
- https://access.redhat.com/errata/RHSA-2025:7076
- https://access.redhat.com/errata/RHSA-2025:8020
- https://access.redhat.com/errata/RHSA-2025:8385
- https://access.redhat.com/security/cve/CVE-2024-12243
- https://bugzilla.redhat.com/show_bug.cgi?id=2344615
- https://gitlab.com/gnutls/gnutls/-/issues/1553
- https://gitlab.com/gnutls/libtasn1/-/issues/52
- https://lists.debian.org/debian-lts-announce/2025/02/msg00027.html
- https://security.netapp.com/advisory/ntap-20250523-0002/
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-202008.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.