USN-8123-1: Mbed TLS vulnerabilities

USN-8123-1: Mbed TLS vulnerabilities

https://ubuntu.com/security/notices/rss.xml / Wed, 03/25/2026 - 23:08
It was discovered that Mbed TLS incorrectly handled memory allocation failures. A remote attacker could possibly use this issue to crash the program. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-44732) Jonathan Winzig discovered that Mbed TLS incorrectly handled crafted inputs. A remote attacker could possibly use this issue to crash the program, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS. (CVE-2024-23775) It was discovered that Mbed TLS incorrectly handled the TLS handshake. A remote attacker could possibly use this issue to break the security guarantees of the TLS handshake. (CVE-2025-27810) Linh Le and Ngan Nguyen discovered that Mbed TLS incorrectly documented the behavior of a function. Application code relying on the documented behavior might be affected. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2025-47917) Linh Le and Ngan Nguyen discovered that Mbed TLS incorrectly handled crafted input. A remote attacker could possibly use this issue to crash the program, resulting in a denial of service. (CVE-2025-48965) It was discovered that Mbed TLS incorrectly handled a race condition. An attacker could possibly use this issue to extract AES keys. (CVE-2025-52496) Linh Le and Ngan Nguyen discovered that Mbed TLS incorrectly handled certain invalid input. A remote attacker could possibly use this issue to crash the program, resulting in a denial of service. (CVE-2025-52497)

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Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.