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"Microsoft Windows - AppX Deployment Service Local Privilege Escalation (2)"

Author

SandboxEscaper

Platform

windows

Release date

2019-05-23

Release Date Title Type Platform Author
2019-07-15 "Streamripper 2.6 - 'Song Pattern' Buffer Overflow" local windows "Andrey Stoykov"
2019-07-15 "Microsoft Windows Remote Desktop - 'BlueKeep' Denial of Service (Metasploit)" dos windows "RAMELLA Sebastien"
2019-07-12 "Microsoft Windows 10.0.17134.648 - HTTP -> SMB NTLM Reflection Leads to Privilege Elevation" local windows "Google Security Research"
2019-07-11 "SNMPc Enterprise Edition 9/10 - Mapping Filename Buffer Overflow" local windows xerubus
2019-07-12 "Microsoft Font Subsetting - DLL Heap Corruption in ComputeFormat4CmapData" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Heap-Based Out-of-Bounds Read/Write in OpenType Font Handling Due to Empty ROS Strings" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - NULL Pointer Dereferences in OpenType Font Handling While Accessing Empty dynarrays" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Multiple Bugs in OpenType Font Handling Related to the _post_ Table" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Out-of-Bounds Read in OpenType Font Handling Due to Undefined FontName Index" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Stack Corruption in OpenType Font Handling While Processing CFF Blend DICT Operator" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Heap-Based Buffer Overflow in OpenType Font Handling in readStrings" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Heap-Based Out-of-Bounds Read/Write in OpenType Font Handling Due to Unbounded iFD" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Heap-Based Buffer Overflow Due to Integer Overflow in readTTCDirectory" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Heap-Based Buffer Overflow in OpenType Font Handling in readCharset" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Heap-Based Buffer Overflow in OpenType Font Handling in readFDSelect" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Heap-Based Buffer Overflow in OpenType Font Handling in readEncoding" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Stack Corruption in OpenType Font Handling Due to Incorrect Handling of blendArray" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Interpreter Stack Underflow in OpenType Font Handling Due to Missing CHKUFLOW" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Use of Uninitialized Memory While Freeing Resources in var_loadavar" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Stack-Based Buffer Overflow in do_set_weight_vector_cube for Large nAxes" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Stack Corruption in OpenType Font Handling Due to Negative nAxes" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Stack Corruption in OpenType Font Handling Due to Negative cubeStackDepth" dos windows "Google Security Research"
2019-07-10 "Microsoft DirectWrite / AFDKO - Stack Corruption in OpenType Font Handling due to Out-of-Bounds cubeStackDepth" dos windows "Google Security Research"
2019-07-10 "Microsoft Windows - Font Subsetting DLL Heap-Based Out-of-Bounds Read in MergeFonts" dos windows "Google Security Research"
2019-07-05 "Microsoft Exchange 2003 - base64-MIME Remote Code Execution" remote windows "Charles Truscott"
2019-07-03 "Apache Tomcat - CGIServlet enableCmdLineArguments Remote Code Execution (Metasploit)" remote windows Metasploit
2019-06-24 "Microsoft Windows Font Cache Service - Insecure Sections Privilege Escalation" dos windows "Google Security Research"
2019-06-24 "Microsoft Windows - 'CmpAddRemoveContainerToCLFSLog' Arbitrary File/Directory Creation" dos windows "Google Security Research"
2019-06-24 "GSearch 1.0.1.0 - Denial of Service (PoC)" dos windows 0xB9
2019-06-21 "EA Origin < 10.5.38 - Remote Code Execution" remote windows "Dominik Penner"
import requests
response = requests.get('https://www.nmmapper.com/api/exploitdetails/46938/?format=json')
                                                {"url": "https://www.nmmapper.com/api/exploitdetails/46938/?format=json", "download_file": "https://www.nmmapper.com/st/exploitdetails/46938/41362/microsoft-windows-appx-deployment-service-local-privilege-escalation-2/download/", "exploit_id": "46938", "exploit_description": "\"Microsoft Windows - AppX Deployment Service Local Privilege Escalation (2)\"", "exploit_date": "2019-05-23", "exploit_author": "SandboxEscaper", "exploit_type": "local", "exploit_platform": "windows", "exploit_port": null}
                                            

For full documentation follow the link above

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There is still a vuln in the code triggered by CVE-2019-0841

The bug that this guy found: https://krbtgt.pw/dacl-permissions-overwrite-privilege-escalation-cve-2019-0841/

If you create the following:

(GetFavDirectory() gets the local appdata folder, fyi)

CreateDirectory(GetFavDirectory() + L"\\Packages\\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\\Microsoft.MicrosoftEdge_44.17763.1.0_neutral__8wekyb3d8bbwe",NULL);
CreateNativeHardlink(GetFavDirectory() + L"\\Packages\\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\\Microsoft.MicrosoftEdge_44.17763.1.0_neutral__8wekyb3d8bbwe\\bear3.txt", L"C:\\Windows\\win.ini");

If we create that directory and put an hardlink in it, it will write the DACL.

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!IMPORTANT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Microsoft.MicrosoftEdge_44.17763.1.0_neutral__8wekyb3d8bbwe this part (i.e 44.17763.1.0) has to reflect the currently installed edge version, you will need to mofidy this in the PoC (polarbear.exe) if different.
You can find this by opening edge -> settings and scrolling down.
Best thing is to just create a folder and hardlink for all the recent edge versions when writing an exploit. But I guess you can also probably get the installed version programmatically.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!IMPORTANT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


To repro:

1. Run polarbear.exe
2. Run windowsappslpe.exe (doesn't matter what file you pass in commandline.. will just make win.ini write-able.. rewrite the original PoC yourself)

Use the vide demo as guidance..

EDB Note: Download ~ https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/46938.zip