{"uuid": "f19014b0-9f5b-4fec-b637-d95595f37135", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-9850", "type": "seen", "source": "https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/osx/browser/safari_in_operator_side_effect.rb", "content": "{\"aliases\": [], \"arch\": \"x64, python, cmd\", \"author\": [\"Yonghwi Jin \", \"Jungwon Lim \", \"Insu Yun \", \"Taesoo Kim \", \"timwr\"], \"autofilter_ports\": [], \"autofilter_services\": [], \"check\": false, \"default_credential\": false, \"description\": \"This module exploits an incorrect side-effect modeling of the 'in' operator.\\n          The DFG compiler assumes that the 'in' operator is side-effect free, however\\n          the  element with the PDF plugin provides a callback that can trigger\\n          side-effects leading to type confusion (CVE-2020-9850).\\n          The type confusion can be used as addrof and fakeobj primitives that then\\n          lead to arbitrary read/write of memory. These primitives allow us to write\\n          shellcode into a JIT region (RWX memory) containing the next stage of the\\n          exploit.\\n          The next stage uses CVE-2020-9856 to exploit a heap overflow in CVM Server,\\n          and extracts a macOS application containing our payload into /var/db/CVMS.\\n          The payload can then be opened with CVE-2020-9801, executing the payload\\n          as a user but without sandbox restrictions.\", \"disclosure_date\": \"2020-03-18\", \"fullname\": \"exploit/osx/browser/safari_in_operator_side_effect\", \"is_install_path\": true, \"mod_time\": \"2022-02-16 11:48:55 +0000\", \"name\": \"Safari in Operator Side Effect Exploit\", \"needs_cleanup\": null, \"notes\": {\"Reliability\": [\"repeatable-session\"], \"SideEffects\": [\"ioc-in-logs\"], \"Stability\": [\"crash-safe\"]}, \"path\": \"/modules/exploits/osx/browser/safari_in_operator_side_effect.rb\", \"platform\": \"OSX,Python,Unix\", \"post_auth\": false, \"rank\": 0, \"ref_name\": \"osx/browser/safari_in_operator_side_effect\", \"references\": [\"CVE-2020-9801\", \"CVE-2020-9850\", \"CVE-2020-9856\", \"URL-https://github.com/sslab-gatech/pwn2own2020\"], \"rport\": null, \"session_types\": false, \"targets\": [\"Mac OS X x64 (Native Payload)\", \"Python payload\", \"Command payload\"], \"type\": \"exploit\"}", "creation_timestamp": "2026-09-08T06:50:29.943335Z"}