by edward | Dec 24, 2023 | Exchange 2016, Exchange 2019
In one of my lab servers, I was busy working on a project and email would just not send. I kept on getting the error below from the consoles output: Error with SMTP server… (451, b’4.7.0 Temporary server error. Please try again later. PRX2′) This...
by edward | Dec 23, 2023 | Exchange 2016, Exchange 2019, Google Captcha
In one of my recent blog posts, we covered brute forcing of the OWA page in Exchange 2019, this also applies to Exchange 2016 and Exchange 2013. If an attacker successfully gains access, they might access an account that has elevated privileges or given enough time,...
by edward | Dec 2, 2023 | Exchange 2016, CVE-2021-33766, Exchange 2019, Kali Linux, ProxyToken
In three of my previous blog posts, we looked at exploiting unpatched/vulnerable Exchange servers with “ProxyLogon”, “ProxyShell” and “ProxyNotShell”. As the exploit lists keep growing, we will look at the “ProxyToken”...
by edward | Nov 30, 2023 | Exchange 2016, ECP_DLP_Policy, Exchange 2019, Kali Linux
I have been covering some of the exploits in Exchange Server in a few of my blog posts and wanted to highlight the fact that I tested another one which allowed me to get a shell on the Exchange Server. Metasploit has a module for the above exploit which worked against...
by edward | Nov 29, 2023 | Exchange 2016, Exchange 2013, Exchange 2019, Kali Linux, ProxyNotShell
In two of my previous blog posts, we looked at exploiting unpatched/vulnerable Exchange servers with “ProxyLogon” and “ProxyShell”. As the exploit lists keep growing, we will look at the “ProxyNotShell” exploit. One of my many...
by edward | Nov 28, 2023 | Exchange 2016, CVE-2021-34473, Exchange 2019, Kali Linux, ProxyShell
In my previous blog post we looked at the Proxy Logon Exploit where several CVE’s could be used to exploit an Exchange Server. In this article we will look at another exploit called “ProxyShell”. The CVE for this vulnerability is...
