USN-7343-2: Jinja2 regression

USN-7343-2: Jinja2 regression

https://ubuntu.com/security/notices/rss.xml / Thu, 03/13/2025 - 01:30
USN-7343-1 fixed vulnerabilities in Jinja2. The update introduced a regression when attempting to import Jinja2 on Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Rafal Krupinski discovered that Jinja2 did not properly restrict the execution of code in situations where templates are used maliciously. An attacker with control over a template's filename and content could potentially use this issue to enable the execution of arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2024-56201) It was discovered that Jinja2 sandboxed environments could be escaped through a call to a string format method. An attacker could possibly use this issue to enable the execution of arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2024-56326) It was discovered that Jinja2 sandboxed environments could be escaped through the malicious use of certain filters. An attacker could possibly use this issue to enable the execution of arbitrary code. (CVE-2025-27516)

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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.