CSS-Exchange
scanning
CSS-Exchange | scanning | |
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98 | 6 | |
1,195 | 158 | |
0.3% | - | |
0.0 | 2.6 | |
2 days ago | 6 months ago | |
PowerShell | Lua | |
MIT License | - |
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
- 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.
scanning
- CitrixBleed.curl
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Comcast says hackers stole data of close to 36M Xfinity customers
What hasn't gotten enough attention here in my view is how astoundingly basic this exploit is.
https://github.com/GossiTheDog/scanning/blob/main/CitrixBlee...
You've got a single curl request to a web service that for magical reasons is running as root. There's no SELinux/jails/etc, and no logs written for this request.
Remember this next time someone wants to sell you a WAF: The Netscaler isn't some wiki application, one of the things it is sold for is specifically as a WAF.
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Australia locks down ports after 'nationally significant' cyberattack
It doesn't come much easier than the Citrixbleed exploit.
https://github.com/GossiTheDog/scanning/blob/main/CitrixBlee...
But I do think society needs to get over the "14 year old script kiddie" slur. The "Enterprise Architects" and "CISCO" being paid a fortune only to be victims of basic issues don't get to look their nose on the people who used a basic exploit.
- Hackeo al estado mayor conjunto
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Open Source Intelligence for Interviews
We can also leverage an Nmap script published on GitHub to get the version of Exchange and see if it's vulnerable to some recently-published CVEs:
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Question regarding nmap output for the Exchange vulnerability
One Gossi made quite fast
What are some alternatives?
HealthChecker - Exchange Server Performance Health Checker Script
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.
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.
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)
Metasploit - Metasploit Framework
badExchangePews
Cyber-Defence - Information released publicly by NCC Group's Cyber Incident Response Team
IISBackdoorDetect - Detects IIS modules such as IIS-RAID
postfix - Postfix MTA by Wietse Venema