{"vulnerability": "CVE-2020-1967", "sightings": [{"uuid": "7c8ff82f-5196-4fc7-9f42-e1c011c1b4cf", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-1967", "type": "seen", "source": "https://t.me/arpsyndicate/2005", "content": "#ExploitObserverAlert\n\nCVE-2020-1967\n\nDESCRIPTION: Exploit Observer has 57 entries related to CVE-2020-1967. Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due to a NULL pointer dereference as a result of incorrect handling of the \"signature_algorithms_cert\" TLS extension. The crash occurs if an invalid or unrecognised signature algorithm is received from the peer. This could be exploited by a malicious peer in a Denial of Service attack. OpenSSL version 1.1.1d, 1.1.1e, and 1.1.1f are affected by this issue. This issue did not affect OpenSSL versions prior to 1.1.1d. Fixed in OpenSSL 1.1.1g (Affected 1.1.1d-1.1.1f).\n\nFIRST-EPSS: 0.099530000\nNVD-IS: 3.6\nNVD-ES: 3.9", "creation_timestamp": "2023-12-18T14:45:57.000000Z"}, {"uuid": "4c6ed3ab-5c22-4585-bfa3-d4b11919b328", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-19678", "type": "seen", "source": "Telegram/O7hrW1lcatT0upkQ3LsrXKU7lj9VxEeffdeYbvChRnQp369D", "content": "", "creation_timestamp": "2025-02-14T10:05:08.000000Z"}, {"uuid": "c8eb42e1-a0a7-4a55-ba14-2c7f2f41b9ea", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-1967", "type": "seen", "source": "https://t.me/SecLabNews/7419", "content": "\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 OpenSSL \u0432\u044b\u043f\u0443\u0441\u0442\u0438\u043b\u0438 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0434\u043b\u044f \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 OpenSSL, \u0443\u0441\u0442\u0440\u0430\u043d\u044f\u044e\u0449\u0435\u0435 \u043e\u043f\u0430\u0441\u043d\u0443\u044e DoS-\u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2020-1967). \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a\u0443 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0442\u044c \u0430\u0442\u0430\u043a\u0438 \u0442\u0438\u043f\u0430 \u00ab\u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438\u00bb (DoS). \u042d\u0442\u043e \u043f\u0435\u0440\u0432\u0430\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430, \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u043d\u0430\u044f \u0432 OpenSSL \u0432 2020 \u0433\u043e\u0434\u0443.    \n\u0412 OpenSSL \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0430 \u043e\u043f\u0430\u0441\u043d\u0430\u044f DoS-\u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c", "creation_timestamp": "2020-04-22T10:15:02.000000Z"}, {"uuid": "a555dec0-29e6-4ea4-bbe8-2005c4fd56f9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-1967", "type": "published-proof-of-concept", "source": "https://t.me/SecLabNews/7514", "content": "\u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0418\u043c\u0440\u0435 \u0420\u0430\u0434 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442 \u0434\u043b\u044f \u043d\u0435\u0434\u0430\u0432\u043d\u043e \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043d\u043e\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2020-1967) \u0432 \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435OpenSSL, \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0442\u044c \u0430\u0442\u0430\u043a\u0438 \u0442\u0438\u043f\u0430 \u00ab\u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438\u00bb (DoS).    \n\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d PoC-\u043a\u043e\u0434 \u0434\u043b\u044f DoS-\u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 OpenSSL", "creation_timestamp": "2020-05-06T08:15:02.000000Z"}, {"uuid": "d09e27d4-51a7-4d6f-ad00-2f073d77e4f9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-1967", "type": "published-proof-of-concept", "source": "https://t.me/CyberSecurityTechnologies/1060", "content": "#exploit\nCVE-2020-1967:\nOpenSSL 1.1.1d, 1.1.1e, 1.1.1f - Segmentation fault in SSL_check_chain (DoS)\nhttps://www.openssl.org/news/secadv/20200421.txt\n]-> PoC exploit about OpenSSL signature_algorithms_cert DoS flaw:\nhttps://github.com/irsl/CVE-2020-1967", "creation_timestamp": "2022-10-07T12:46:19.000000Z"}]}