CSS-Exchange
Exchange Server support tools and scripts (by microsoft)
GadgetToJScript
A tool for generating .NET serialized gadgets that can trigger .NET assembly load/execution when deserialized using BinaryFormatter from JS/VBS/VBA based scripts. (by med0x2e)
CSS-Exchange | GadgetToJScript | |
---|---|---|
98 | 1 | |
1,195 | 824 | |
0.3% | - | |
0.0 | 1.8 | |
2 days ago | almost 3 years ago | |
PowerShell | C# | |
MIT License | GNU General Public License v3.0 only |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
CSS-Exchange
Posts with mentions or reviews of CSS-Exchange.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-08-12.
- Has anyone ran the CVE-2023-23397 script against a large environment?
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CVE-2023-23397
The MaxServicePointIdleTime property I changed because of what I saw suggested here: https://github.com/microsoft/CSS-Exchange/issues/1581.
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CVE-2023-23397 - Critical Elevation of Privilege zero-day in Microsoft Outlook, severity 9.8
This is actively exploited, patch immediately. Microsoft also provided a script that checks Exchange items for malicious messaging items: https://github.com/microsoft/CSS-Exchange/blob/a4c096e8b6e6eddeba2f42910f165681ed64adf7/docs/Security/CVE-2023-23397.md
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// SITUATIONAL AWARENESS // Hunting Microsoft Word NTLM Relay Vulnerability CVE-2023-23397
Microsoft has released a PowerShell script that can be run on Exchange infrastructure to scan email files for malicious UNC paths, however, patching is the preferred mitigation strategy.
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Exchange 0day exploit in wild
I would expect that installing the URL Rewrite 2 module shouldn't cause any problems -- E2013 as such doesn't care about it. In fact, Microsoft's own EOMT script for the Hafnium mitigations suggests installing it. It'll likely require a reboot, though, or at the very least an IIS restart.
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Health checker reports unsigned IIS modules (Exchange 2013 CU23)
Yep, the August security update and OS updates were installed on all four nodes. But the order in which they were installed may have been different... I don't recall. Someone just posted above that this is a known problem with Windows 2012/R2: https://github.com/microsoft/CSS-Exchange/pull/1166
- Critical privileged elevation patch incoming next week.
- Exchange Admin?
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May 2022 Security Update - detection
Which is the latest I can find on Github. This server is running Exchange 2019 CU 11. It has the March updates (KB5012698), but not the May one (KB5014261). You can also verify from the build number it's not up to date. There are no vulnerabilities reported and the only thing in "red" is that TCP keepalive warning.
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Exchange 2019 still requires obsolete UCM4 installation
https://github.com/microsoft/CSS-Exchange/issues/535 Even the maintainer David Paulson of the ExchangeHealtcheck script opened an issue on this matter, only waiting on feedback of the Exchange Team.
GadgetToJScript
Posts with mentions or reviews of GadgetToJScript.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2021-03-07.
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You've been hit by / You've been struck by / An Exchange Exploit - So now what?
I'm sorry but most of this is not right. We can see in the attacker is running JScript code in memory using the eval function. There are no files dropped to disk and no child processes spawned here -- it's all in memory and all still inside the exchange web server process. At this point, it's impossible to know what JScript was executed, but it is possible (and not that difficult) to run whole .NET programs using JScript. From .NET there's nothing an attacker can't do. They could have easily run a beacon inside of the exchange webserver process without any files dropped to disk or processes spawned.
What are some alternatives?
When comparing CSS-Exchange and GadgetToJScript you can also consider the following projects:
HealthChecker - Exchange Server Performance Health Checker Script
Metasploit - Metasploit Framework
New-KrbtgtKeys.ps1 - This script will enable you to reset the krbtgt account password and related keys while minimizing the likelihood of Kerberos authentication issues being caused by the operation.
exchange_webshell_detection - Detect webshells dropped on Microsoft Exchange servers exploited through "proxylogon" group of vulnerabilites (CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065)
badExchangePews
Cyber-Defence - Information released publicly by NCC Group's Cyber Incident Response Team
scanning
IISBackdoorDetect - Detects IIS modules such as IIS-RAID
postfix - Postfix MTA by Wietse Venema
CSS-Exchange vs HealthChecker
GadgetToJScript vs Metasploit
CSS-Exchange vs New-KrbtgtKeys.ps1
CSS-Exchange vs exchange_webshell_detection
CSS-Exchange vs Metasploit
CSS-Exchange vs badExchangePews
CSS-Exchange vs Cyber-Defence
CSS-Exchange vs scanning
CSS-Exchange vs IISBackdoorDetect
CSS-Exchange vs postfix