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.
Weakness
An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | RedHat | gnutls-0:3.6.16-8.el8_10.3 | * |
| Red Hat Enterprise Linux 8 | RedHat | gnutls-0:3.6.16-8.el8_10.3 | * |
| Red Hat Enterprise Linux 9 | RedHat | gnutls-0:3.8.3-6.el9 | * |
| Red Hat Enterprise Linux 9 | RedHat | gnutls-0:3.8.3-6.el9 | * |
| Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | RedHat | gnutls-0:3.7.6-21.el9_2.4 | * |
| Red Hat Enterprise Linux 9.4 Extended Update Support | RedHat | gnutls-0:3.8.3-4.el9_4.2 | * |
| Red Hat Discovery 1.14 | RedHat | discovery/discovery-server-rhel9:sha256:ad1045aa0de937c3a6969ec377f7bfeda9a44ee434a954e8245e9840316ffc1c | * |
| Red Hat Discovery 1.14 | RedHat | discovery/discovery-ui-rhel9:sha256:492e412759cf0eedfa5b557f7b0865f8864f84d0ed75e11dc8d7a840837d9644 | * |
| Gnutls28 | Ubuntu | devel | * |
| Gnutls28 | Ubuntu | esm-infra/focal | * |
| Gnutls28 | Ubuntu | fips-preview/jammy | * |
| Gnutls28 | Ubuntu | fips-updates/jammy | * |
| Gnutls28 | Ubuntu | fips-updates/noble | * |
| Gnutls28 | Ubuntu | focal | * |
| Gnutls28 | Ubuntu | jammy | * |
| Gnutls28 | Ubuntu | noble | * |
| Gnutls28 | Ubuntu | oracular | * |
| Gnutls28 | Ubuntu | plucky | * |
| Gnutls28 | Ubuntu | questing | * |
| Gnutls28 | Ubuntu | upstream | * |
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/libtasn1/-/issues/52
- https://lists.debian.org/debian-lts-announce/2025/02/msg00027.html
- https://security.netapp.com/advisory/ntap-20250523-0002/