{"vulnerability": "cve-2019-5436", "sightings": [{"uuid": "21a5042c-8684-4dde-9af5-df0c5d3a725e", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2019-5436", "type": "published-proof-of-concept", "source": "https://t.me/critical_bug/616", "content": "https://hackerone.com/reports/684603\n\n\u0414\u0430\u043d\u043d\u044b\u0439 \u0440\u0435\u043f\u043e\u0440\u0442 \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u0442 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 curl. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 TFTP \u0441\u0435\u0440\u0432\u0435\u0440\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043d\u0435 \u043e\u0442\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u0442 OACK (\u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u043e\u043f\u0446\u0438\u0439), \u0430 \u0441\u0440\u0430\u0437\u0443 \u043e\u0442\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u0442 \u0431\u043b\u043e\u043a \u0441 \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u043c \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e (512 \u0431\u0430\u0439\u0442), \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 curl \u043d\u0435 \u0443\u0447\u0438\u0442\u044b\u0432\u0430\u0435\u0442 \u044d\u0442\u043e\u0442 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0439 \u0440\u0430\u0437\u043c\u0435\u0440 \u0431\u043b\u043e\u043a\u0430 \u0438 \u0432\u043c\u0435\u0441\u0442\u043e \u044d\u0442\u043e\u0433\u043e \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0438\u0432\u0430\u0435\u0442 \u043a\u043e\u043d\u0435\u0446 \u0444\u0430\u0439\u043b\u0430. \u0412 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0435 \u043f\u043e\u043b\u0443\u0447\u0430\u0435\u0442\u0441\u044f \u043e\u0431\u0440\u0435\u0437\u0430\u043d\u043d\u044b\u0439 \u0444\u0430\u0439\u043b \u0434\u043b\u0438\u043d\u043e\u0439 512 \u0431\u0430\u0439\u0442 \u0431\u0435\u0437 \u043a\u043e\u0434\u0430 \u043e\u0448\u0438\u0431\u043a\u0438. \n\n\u041f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0435 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0434\u043b\u044f \u044d\u0442\u043e\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0441\u043e\u0441\u0442\u043e\u0438\u0442 \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e\u0431\u044b \u0432\u0435\u0440\u043d\u0443\u0442\u044c \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 \u043a\u043e\u0434\u0435, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0431\u044b\u043b\u0438 \u0432\u043d\u0435\u0441\u0435\u043d\u044b \u0440\u0430\u043d\u0435\u0435 \u0432 \u0441\u0432\u044f\u0437\u0438 \u0441 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 CVE-2019-5436. \u0418\u043b\u0438 \u043c\u043e\u0436\u043d\u043e \u0437\u0430\u043c\u0435\u043d\u0438\u0442\u044c \u0442\u0435\u043a\u0443\u0449\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 malloc \u0434\u043b\u044f \u0431\u0443\u0444\u0435\u0440\u0430 \u043f\u0440\u0438\u0435\u043c\u0430 \u043d\u0430 \u0431\u0443\u0444\u0435\u0440 \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u043c \u043d\u0435 \u043c\u0435\u043d\u044c\u0448\u0435 512 \u0431\u0430\u0439\u0442 \u0438\u043b\u0438 \u0436\u0435 \u043d\u0430 \u0431\u0443\u0444\u0435\u0440, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0431\u044b\u043b \u0437\u0430\u043f\u0440\u043e\u0448\u0435\u043d \u0434\u0440\u0443\u0433\u0438\u043c \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u043c \u0431\u043b\u043e\u043a\u0430. \n\n\u0414\u043b\u044f \u0432\u043e\u0441\u043f\u0440\u043e\u0438\u0437\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043e\u0448\u0438\u0431\u043a\u0438 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0435 \u0448\u0430\u0433\u0438:\n\n1. \u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c TFTP \u0441\u0435\u0440\u0432\u0435\u0440, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043d\u0435 \u043e\u0442\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u0442 OACK \u0432 \u043e\u0442\u0432\u0435\u0442 \u043d\u0430 \u0437\u0430\u043f\u0440\u043e\u0441 \u0431\u043b\u043e\u043a\u0430 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0440\u0430\u0437\u043c\u0435\u0440\u0430, \u0430 \u0432\u043c\u0435\u0441\u0442\u043e \u044d\u0442\u043e\u0433\u043e \u043e\u0442\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u0442 \u043d\u0435\u043f\u043e\u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u043e \u043f\u0435\u0440\u0432\u044b\u0439 \u0431\u043b\u043e\u043a \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u043c \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e (512 \u0431\u0430\u0439\u0442).  \n2. \u0417\u0430\u043f\u0443\u0441\u0442\u0438\u0442\u044c curl \u0441 \u0443\u043a\u0430\u0437\u0430\u043d\u0438\u0435\u043c \u0440\u0430\u0437\u043c\u0435\u0440\u0430 \u0431\u043b\u043e\u043a\u0430 \u0431\u043e\u043b\u044c\u0448\u0435\u0433\u043e, \u0447\u0435\u043c 512 \u0431\u0430\u0439\u0442. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440: \n```\ncurl --tftp-blksize 8192 tftp://9.1.9.1/data.bin --output data.bin\n ```\n3. \u041f\u0440\u043e\u0432\u0435\u0440\u0438\u0442\u044c, \u0447\u0442\u043e \u043a\u043e\u0434 \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044f \u0440\u0430\u0432\u0435\u043d 0, \u043d\u043e \u0440\u0430\u0437\u043c\u0435\u0440 \u0444\u0430\u0439\u043b\u0430 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 512 \u0431\u0430\u0439\u0442.\n\n\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u043e\u0431\u0440\u0435\u0437\u0430\u043d\u0438\u044e \u0444\u0430\u0439\u043b\u043e\u0432 \u0431\u0435\u0437 \u043a\u043e\u0434\u0430 \u043e\u0448\u0438\u0431\u043a\u0438.", "creation_timestamp": "2023-04-22T21:55:42.000000Z"}, {"uuid": "61a500f1-3da6-48b0-8efc-0ecc2234750d", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2019-5436", "type": "seen", "source": "https://t.me/hacking_Attack/142015", "content": "Need help by.\nhttps://www.reddit.com/r/Pentesting/comments/1f9w70a/need_help_by/\n\nHello everyone, I'm a student currently learning pentesting, and I've come across a website that is vulnerable to CVE-2019-5436. To better understand the vulnerability, I set up a VM that's also vulnerable to this issue. However, I'm currently stuck trying to develop an exploit for it. My goal isn't for someone to just hand me the exploit (although I wouldn\u2019t mind it!), but rather to get guidance on how to approach building it. I\u2019d appreciate advice on how the exploit should work, as well as recommendations on which programming language would be best suited for this task. Any help or pointers would be greatly appreciated! Thanks in advance!    submitted by    /u/AirlineCurious3456  (https://www.reddit.com/user/AirlineCurious3456) \n [link] (https://www.reddit.com/r/Pentesting/comments/1f9w70a/need_help_by/)   [comments] (https://www.reddit.com/r/Pentesting/comments/1f9w70a/need_help_by/)", "creation_timestamp": "2026-09-01T20:00:31.148614Z"}]}