Red Hat Security Advisory: gnutls security update
A moderate severity vulnerability (CVE-2024-12243) affects the GnuTLS library used in Red Hat Enterprise Linux 9.4 Extended Update Support. The issue involves inefficient DER decoding in the libtasn1 component, which can lead to a remote denial of service (DoS). Red Hat has released security updates to address this vulnerability in GnuTLS packages for multiple architectures including x86_64, s390x, ppc64le, and aarch64. The vulnerability is categorized under CWE-407 (Use of Incorrectly-Resolved Name or Reference).
AI Analysis
Technical Summary
The GnuTLS library, which implements cryptographic protocols such as SSL, TLS, and DTLS, is impacted by CVE-2024-12243 due to inefficient DER decoding in the libtasn1 library. This inefficiency can be exploited remotely to cause a denial of service condition. Red Hat has issued a security advisory (RHSA-2025:4051) providing updated gnutls packages for Red Hat Enterprise Linux 8 across multiple architectures to fix this issue. The vulnerability is categorized under CWE-407 (Improper Resource Shutdown or Release).
Potential Impact
This vulnerability allows an attacker to remotely cause a denial of service by exploiting inefficient DER decoding in libtasn1 used by GnuTLS. The impact is limited to service disruption and does not include code execution or data compromise based on the provided information.
Mitigation Recommendations
Red Hat has released updated gnutls packages that address this vulnerability. Users of Red Hat Enterprise Linux 8 should apply the security update as described in the Red Hat advisory RHSA-2025:4051. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: gnutls security update
Description
A moderate severity vulnerability (CVE-2024-12243) affects the GnuTLS library used in Red Hat Enterprise Linux 9.4 Extended Update Support. The issue involves inefficient DER decoding in the libtasn1 component, which can lead to a remote denial of service (DoS). Red Hat has released security updates to address this vulnerability in GnuTLS packages for multiple architectures including x86_64, s390x, ppc64le, and aarch64. The vulnerability is categorized under CWE-407 (Use of Incorrectly-Resolved Name or Reference).
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The GnuTLS library, which implements cryptographic protocols such as SSL, TLS, and DTLS, is impacted by CVE-2024-12243 due to inefficient DER decoding in the libtasn1 library. This inefficiency can be exploited remotely to cause a denial of service condition. Red Hat has issued a security advisory (RHSA-2025:4051) providing updated gnutls packages for Red Hat Enterprise Linux 8 across multiple architectures to fix this issue. The vulnerability is categorized under CWE-407 (Improper Resource Shutdown or Release).
Potential Impact
This vulnerability allows an attacker to remotely cause a denial of service by exploiting inefficient DER decoding in libtasn1 used by GnuTLS. The impact is limited to service disruption and does not include code execution or data compromise based on the provided information.
Mitigation Recommendations
Red Hat has released updated gnutls packages that address this vulnerability. Users of Red Hat Enterprise Linux 8 should apply the security update as described in the Red Hat advisory RHSA-2025:4051. For detailed update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:8020
- Cve Count
- 1
Threat ID: 6a1f4e89e29bf47b500832f2
Added to database: 06/02/2026, 21:43:37 UTC
Last enriched: 06/26/2026, 01:27:47 UTC
Last updated: 09/10/2026, 19:24:53 UTC
Views: 69
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