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Files from PeterJson

First Active2021-08-20
Last Active2022-08-22
Microsoft Exchange Server ChainedSerializationBinder Remote Code Execution
Posted Aug 22, 2022
Authored by Spencer McIntyre, Markus Wulftange, zcgonvh, Grant Willcox, testanull, PeterJson, Microsoft Threat Intelligence Center, Microsoft Security Response Center, pwnforsp | Site metasploit.com

This Metasploit module exploits vulnerabilities within the ChainedSerializationBinder as used in Exchange Server 2019 CU10, Exchange Server 2019 CU11, Exchange Server 2016 CU21, and Exchange Server 2016 CU22 all prior to Mar22SU. Note that authentication is required to exploit these vulnerabilities.

tags | exploit, vulnerability
advisories | CVE-2021-42321, CVE-2022-23277
SHA-256 | 357c3536b07ff810cec76347c7e5ce16faf862cac3951d66875221d4f487430d
Microsoft Exchange Server Remote Code Execution
Posted Feb 25, 2022
Authored by zcgonvh, Grant Willcox, testanull, PeterJson, Microsoft Threat Intelligence Center, Microsoft Security Response Center, pwnforsp | Site metasploit.com

This Metasploit module allows remote attackers to execute arbitrary code on Exchange Server 2019 CU10 prior to Security Update 3, Exchange Server 2019 CU11 prior to Security Update 2, Exchange Server 2016 CU21 prior to Security Update 3, and Exchange Server 2016 CU22 prior to Security Update 2. Note that authentication is required to exploit this vulnerability. The specific flaw exists due to the fact that the deny list for the ChainedSerializationBinder had a typo whereby an entry was typo'd as System.Security.ClaimsPrincipal instead of the proper value of System.Security.Claims.ClaimsPrincipal. By leveraging this vulnerability, attacks can bypass the ChainedSerializationBinder's deserialization deny list and execute code as NT AUTHORITY\SYSTEM. Tested against Exchange Server 2019 CU11 SU0 on Windows Server 2019, and Exchange Server 2016 CU22 SU0 on Windows Server 2016.

tags | exploit, remote, arbitrary
systems | windows
advisories | CVE-2021-42321
SHA-256 | 12eb99965a3f9b7bfde5c2c3d85628bf4f85bbe42475b654e2c35b7e33a8ccaa
Microsoft Exchange ProxyShell Remote Code Execution
Posted Aug 20, 2021
Authored by Spencer McIntyre, Orange Tsai, wvu, Ramella Sebastien, Jang, PeterJson, brandonshi123 | Site metasploit.com

This Metasploit module exploits a vulnerability on Microsoft Exchange Server that allows an attacker to bypass the authentication, impersonate an arbitrary user, and write an arbitrary file to achieve remote code execution. By taking advantage of this vulnerability, you can execute arbitrary commands on the remote Microsoft Exchange Server. This vulnerability affects Exchange 2013 CU23 versions before 15.0.1497.15, Exchange 2016 CU19 versions before 15.1.2176.12, Exchange 2016 CU20 versions before 15.1.2242.5, Exchange 2019 CU8 versions before 15.2.792.13, and Exchange 2019 CU9 versions before 15.2.858.9.

tags | exploit, remote, arbitrary, code execution
advisories | CVE-2021-31207, CVE-2021-34473, CVE-2021-34523
SHA-256 | b555cd3b9862ec567195ff3003e6dc453483630a7c663ee17d582778c11dbf59
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