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CVE-2022-23277 is a remote code execution vulnerability in Microsoft Exchange Server. The provided content identifies it as a critical Exchange Server RCE addressed in Microsoft’s March 2022 security updates. According to the supplied facts, exploitation is possible by an authenticated attacker sending a network call that triggers code execution in the context of the Exchange server’s account. No user interaction is required. Microsoft assessed the issue as more likely to be exploited. The specific vulnerable function or code path is not provided in the available content.
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2 valid exploits after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module targeting Microsoft Exchange Server vulnerabilities (CVE-2021-42321 and CVE-2022-23277) in the ChainedSerializationBinder component. The exploit requires valid Exchange user credentials and targets Exchange 2016 CU21/CU22 and 2019 CU10/CU11 prior to the March 2022 Security Update. The module leverages authenticated access to the Exchange Web Services (EWS) endpoint (/ews/exchange.asmx) to create a malicious user configuration object, which is then deserialized to achieve remote code execution as SYSTEM. The exploit supports multiple payload types, including direct command execution, file droppers, and PowerShell stagers, and is fully integrated into the Metasploit framework, allowing for payload customization and automated exploitation. The code is mature, weaponized, and suitable for post-authentication exploitation scenarios. The only fingerprintable endpoint is the EWS SOAP endpoint, which is standard for Exchange servers.
This repository contains an exploit for CVE-2022-23277, a remote code execution vulnerability in Microsoft Exchange Server. The main exploit script is 'cve-2022-23277.py', which automates the exploitation process by interacting with the Exchange Web Services (EWS) SOAP API at '/ews/exchange.asmx' on a specified target (e.g., https://10.0.0.52). The exploit works by sending crafted SOAP requests to manipulate user configuration and inject a serialized payload that results in the creation of a webshell ('1.aspx') in the 'aspnet_client' directory of the target server. The webshell allows arbitrary file writes and code execution via HTTP requests. The exploit requires authentication, which must be handled manually (e.g., using Burp Suite). The repository also includes a C# file ('ObjectDataProviderGenerator.cs') that generates the serialized payloads used in the attack, supporting multiple .NET serialization formats. The README provides a sample webshell and brief usage notes. Overall, the repository provides a working exploit chain for authenticated RCE on vulnerable Exchange servers.
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2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical remote code execution vulnerability in Microsoft Exchange Server that can be triggered by an authenticated user via a network call, executing code in the context of the server account without user interaction.
A Microsoft Exchange Server remote code execution (RCE) vulnerability addressed by the March 2022 Exchange security update rollup.
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Cross-references every affected SKU, including bundled OEM variants.
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