Exchange remote code execution vulnerabilities are always valuable exploits to have. This week Metasploit added an exploit for an authenticated RCE in Microsoft Exchange servers 2016 and server 2019 identified as CVE-2021-42321. The flaw leveraged by the exploit exists in a misconfigured denylist that failed to prevent a serialized blob from being loaded resulting in code execution. While this is an authenticated vulnerability, a standard user has sufficient permissions to trigger it which likely encompasses most users within an organization that uses Exchange. The vulnerability affects 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.
Community member timwr updated the existing Chrome enumeration module to support decrypting passwords from modern versions of Chrome. The module can now decrypt both the new and old formats of passwords. This is helpful because when Chrome is updated, passwords in the old format are not updated to the new format.
auxiliary/gather/microweber_lfi
which targets Microweber CMS v1.2.10 and allows authenticated users to read arbitrary files on disk.wordpress_scanner
module has been updated to support enumerating WordPress users using the wp-json
API.getsystem
command where a failed attempt to elevate can result in a partially-broken session.tools/modules/module_reference.rb
code has been updated to log redirects so that they can be appropriately triaged later and to support saving results to a CSV file. Finally, several modules had their code adjusted to conform to RuboCop standards.As always, you can update to the latest Metasploit Framework with msfupdate
and you can get more details on the changes since the last blog post from
GitHub:
If you are a git
user, you can clone the Metasploit Framework repo (master branch) for the latest.
To install fresh without using git, you can use the open-source-only Nightly Installers or the
binary installers (which also include the commercial edition).