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Files from gwillcox-r7

First Active2020-06-11
Last Active2021-11-16
Sitecore Experience Platform (XP) Remote Code Execution
Posted Nov 16, 2021
Authored by gwillcox-r7, AssetNote | Site metasploit.com

This Metasploit module exploits a deserialization vulnerability in the Report.ashx page of Sitecore XP 7.5 to 7.5.2, 8.0 to 8.0.7, 8.1 to 8.1.3, and 8.2 to 8.2.7. Versions 7.2.6 and earlier and 9.0 and later are not affected. The vulnerability occurs due to Report.ashx's handler, located in Sitecore.Xdb.Client.dll under the Sitecore.sitecore.shell.ClientBin.Reporting.Report definition, having a ProcessRequest() handler that calls ProcessReport() with the context of the attacker's request without properly checking if the attacker is authenticated or not. This request then causes ReportDataSerializer.DeserializeQuery() to be called, which will end up calling the DeserializeParameters() function of Sitecore.Analytics.Reporting.ReportDataSerializer, if a "parameters" XML tag is found in the attacker's request. Then for each subelement named "parameter", the code will check that it has a name and if it does, it will call NetDataContractSerializer().ReadObject on it. NetDataContractSerializer is vulnerable to deserialization attacks and can be trivially exploited by using the TypeConfuseDelegate gadget chain. By exploiting this vulnerability, an attacker can gain arbitrary code execution as the user that IIS is running as, aka NT AUTHORITY\NETWORK SERVICE. Users can then use technique 4 of the "getsystem" command to use RPCSS impersonation and get SYSTEM level code execution.

tags | exploit, arbitrary, shell, code execution
advisories | CVE-2021-42237
MD5 | cdadfd61899fe57ebdfb290f0c923b2b
PEAR Archive_Tar Arbitrary File Write
Posted Jan 25, 2021
Authored by gwillcox-r7, xorathustra | Site metasploit.com

This Metasploit module takes advantages of Archive_Tar versions prior to 1.4.11 which fail to validate file stream wrappers contained within filenames to write an arbitrary file containing user controlled content to an arbitrary file on disk. Note that the file will be written to disk with the permissions of the user that PHP is running as, so it may not be possible to overwrite some files if the PHP user is not appropriately privileged.

tags | exploit, arbitrary, php
advisories | CVE-2020-28949
MD5 | 7c33e20f3f1e07af9b1f4641460e7354
Agent Tesla Panel Remote Code Execution
Posted Jun 18, 2020
Authored by Ege Balci, mekhalleh, gwillcox-r7 | Site metasploit.com

This Metasploit module exploits a command injection vulnerability within the Agent Tesla control panel, in combination with an SQL injection vulnerability and a PHP object injection vulnerability, to gain remote code execution on affected hosts. Panel versions released prior to September 12, 2018 can be exploited by unauthenticated attackers to gain remote code execution as user running the web server. Agent Tesla panels released on or after this date can still be exploited however, provided that attackers have valid credentials for the Agent Tesla control panel. Note that this module presently only fully supports Windows hosts running Agent Tesla on the WAMP stack. Support for Linux may be added in a future update, but could not be confirmed during testing.

tags | exploit, remote, web, php, code execution, sql injection
systems | linux, windows
MD5 | d4d981962d4baab56ec1e03af0dd4132
Background Intelligent Transfer Service Privilege Escalation
Posted Jun 11, 2020
Authored by itm4n, gwillcox-r7 | Site metasploit.com

This Metasploit module exploits CVE-2020-0787, an arbitrary file move vulnerability in outdated versions of the Background Intelligent Transfer Service (BITS), to overwrite C:\Windows\System32\WindowsCoreDeviceInfo.dll with a malicious DLL containing the attacker's payload. To achieve code execution as the SYSTEM user, the Update Session Orchestrator service is then started, which will result in the malicious WindowsCoreDeviceInfo.dll being run with SYSTEM privileges due to a DLL hijacking issue within the Update Session Orchestrator Service. Note that presently this module only works on Windows 10 and Windows Server 2016 and later as the Update Session Orchestrator Service was only introduced in Windows 10. Note that only Windows 10 has been tested, so your mileage may vary on Windows Server 2016 and later.

tags | exploit, arbitrary, code execution
systems | windows
advisories | CVE-2020-0787
MD5 | 0804ff3bfe957376a4af71aa3919154f
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